Finding the Fourth Proportional to 89,429.50, 123,438.63 and 59,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,429.50 : 123,438.63 = 59,621.50 : x
2. Step 2: Convert to fraction form
   89,429.50/123,438.63 = 59,621.50/x
3. Step 3: Cross multiply
   89,429.50x = 123,438.63 × 59,621.50
4. Step 4: Simplify right side
   89,429.50x = 7,359,596,278.55
5. Step 5: Solve for x
   x = 7,359,596,278.55/89,429.50
6. Step 6: Final answer
   x = 82,294.95