Finding the Fourth Proportional to 89,131.68, 133,697.52 and 42,359.04

Step by Step Solution

1. Step 1: Write the proportion equation
   89,131.68 : 133,697.52 = 42,359.04 : x
2. Step 2: Convert to fraction form
   89,131.68/133,697.52 = 42,359.04/x
3. Step 3: Cross multiply
   89,131.68x = 133,697.52 × 42,359.04
4. Step 4: Simplify right side
   89,131.68x = 5,663,298,597.58
5. Step 5: Solve for x
   x = 5,663,298,597.58/89,131.68
6. Step 6: Final answer
   x = 63,538.56