Finding the Fourth Proportional to 89,159.90, 133,679.25 and 42,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,159.90 : 133,679.25 = 42,417.50 : x
2. Step 2: Convert to fraction form
   89,159.90/133,679.25 = 42,417.50/x
3. Step 3: Cross multiply
   89,159.90x = 133,679.25 × 42,417.50
4. Step 4: Simplify right side
   89,159.90x = 5,670,339,586.88
5. Step 5: Solve for x
   x = 5,670,339,586.88/89,159.90
6. Step 6: Final answer
   x = 63,597.42