Finding the Fourth Proportional to 60,642.72, 91,049.16 and 31,081.76

Step by Step Solution

1. Step 1: Write the proportion equation
   60,642.72 : 91,049.16 = 31,081.76 : x
2. Step 2: Convert to fraction form
   60,642.72/91,049.16 = 31,081.76/x
3. Step 3: Cross multiply
   60,642.72x = 91,049.16 × 31,081.76
4. Step 4: Simplify right side
   60,642.72x = 2,829,968,139.32
5. Step 5: Solve for x
   x = 2,829,968,139.32/60,642.72
6. Step 6: Final answer
   x = 46,666.25