Finding the Fourth Proportional to 60,038.72, 90,025.68 and 42,542.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,038.72 : 90,025.68 = 42,542.72 : x
2. Step 2: Convert to fraction form
   60,038.72/90,025.68 = 42,542.72/x
3. Step 3: Cross multiply
   60,038.72x = 90,025.68 × 42,542.72
4. Step 4: Simplify right side
   60,038.72x = 3,829,937,297.05
5. Step 5: Solve for x
   x = 3,829,937,297.05/60,038.72
6. Step 6: Final answer
   x = 63,791.12