Finding the Fourth Proportional to 60,921.62, 91,288.17 and 42,238.16

Step by Step Solution

1. Step 1: Write the proportion equation
   60,921.62 : 91,288.17 = 42,238.16 : x
2. Step 2: Convert to fraction form
   60,921.62/91,288.17 = 42,238.16/x
3. Step 3: Cross multiply
   60,921.62x = 91,288.17 × 42,238.16
4. Step 4: Simplify right side
   60,921.62x = 3,855,843,874.13
5. Step 5: Solve for x
   x = 3,855,843,874.13/60,921.62
6. Step 6: Final answer
   x = 63,291.89