Finding the Fourth Proportional to 90,300.48, 124,635.18 and 56,302.38

Step by Step Solution

1. Step 1: Write the proportion equation
   90,300.48 : 124,635.18 = 56,302.38 : x
2. Step 2: Convert to fraction form
   90,300.48/124,635.18 = 56,302.38/x
3. Step 3: Cross multiply
   90,300.48x = 124,635.18 × 56,302.38
4. Step 4: Simplify right side
   90,300.48x = 7,017,257,265.73
5. Step 5: Solve for x
   x = 7,017,257,265.73/90,300.48
6. Step 6: Final answer
   x = 77,710.08