Finding the Fourth Proportional to 89,123.90, 133,715.63 and 29,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,123.90 : 133,715.63 = 29,155.10 : x
2. Step 2: Convert to fraction form
   89,123.90/133,715.63 = 29,155.10/x
3. Step 3: Cross multiply
   89,123.90x = 133,715.63 × 29,155.10
4. Step 4: Simplify right side
   89,123.90x = 3,898,491,968.52
5. Step 5: Solve for x
   x = 3,898,491,968.52/89,123.90
6. Step 6: Final answer
   x = 43,742.39