Finding the Fourth Proportional to 103,340.86, 142,605.72 and 58,018.01

Step by Step Solution

1. Step 1: Write the proportion equation
   103,340.86 : 142,605.72 = 58,018.01 : x
2. Step 2: Convert to fraction form
   103,340.86/142,605.72 = 58,018.01/x
3. Step 3: Cross multiply
   103,340.86x = 142,605.72 × 58,018.01
4. Step 4: Simplify right side
   103,340.86x = 8,273,700,445.53
5. Step 5: Solve for x
   x = 8,273,700,445.53/103,340.86
6. Step 6: Final answer
   x = 80,062.24