Finding the Fourth Proportional to 165,833.60, 228,856.71 and 90,382.10

Step by Step Solution

1. Step 1: Write the proportion equation
   165,833.60 : 228,856.71 = 90,382.10 : x
2. Step 2: Convert to fraction form
   165,833.60/228,856.71 = 90,382.10/x
3. Step 3: Cross multiply
   165,833.60x = 228,856.71 × 90,382.10
4. Step 4: Simplify right side
   165,833.60x = 20,684,550,048.89
5. Step 5: Solve for x
   x = 20,684,550,048.89/165,833.60
6. Step 6: Final answer
   x = 124,730.75