const array = [

    { id: 1, orderTotal: 50000 },

    { id: 3, orderTotal: 50000 },

    { id: 2, orderTotal: 100000 },

    { id: 4, orderTotal: 200000 },

];

const getNearestOrderValue = (arr, totalPrice) => {

    let nearestItem = [];

    let maxSmaller = 0;

    for (const item of arr) {

        if (item?.orderTotal > totalPrice) {

          break;

        } else if (item?.orderTotal >= maxSmaller) {

          if (item?.orderTotal > maxSmaller) {

            maxSmaller = item?.orderTotal;

            nearestItem = [];

          }

          nearestItem.push(item);

        }

    }

    return nearestItem;

}

console.log(getNearestOrderValue(array, 50000));

console.log(getNearestOrderValue(array, 120000));