Finding the Fourth Proportional to 105,180.77, 145,168.17 and 62,158.43

Step by Step Solution

1. Step 1: Write the proportion equation
   105,180.77 : 145,168.17 = 62,158.43 : x
2. Step 2: Convert to fraction form
   105,180.77/145,168.17 = 62,158.43/x
3. Step 3: Cross multiply
   105,180.77x = 145,168.17 × 62,158.43
4. Step 4: Simplify right side
   105,180.77x = 9,023,425,533.17
5. Step 5: Solve for x
   x = 9,023,425,533.17/105,180.77
6. Step 6: Final answer
   x = 85,789.69