Finding the Fourth Proportional to 157,111.83, 216,812.50 and 85,490.62

Step by Step Solution

1. Step 1: Write the proportion equation
   157,111.83 : 216,812.50 = 85,490.62 : x
2. Step 2: Convert to fraction form
   157,111.83/216,812.50 = 85,490.62/x
3. Step 3: Cross multiply
   157,111.83x = 216,812.50 × 85,490.62
4. Step 4: Simplify right side
   157,111.83x = 18,535,433,964.69
5. Step 5: Solve for x
   x = 18,535,433,964.69/157,111.83
6. Step 6: Final answer
   x = 117,976.06