Finding the Fourth Proportional to 157,141, 216,854.58 and 90,111.88

Step by Step Solution

1. Step 1: Write the proportion equation
   157,141 : 216,854.58 = 90,111.88 : x
2. Step 2: Convert to fraction form
   157,141/216,854.58 = 90,111.88/x
3. Step 3: Cross multiply
   157,141x = 216,854.58 × 90,111.88
4. Step 4: Simplify right side
   157,141x = 19,541,173,890.41
5. Step 5: Solve for x
   x = 19,541,173,890.41/157,141
6. Step 6: Final answer
   x = 124,354.39