Finding the Fourth Proportional to 56,552.72, 78,008.12 and 40,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,552.72 : 78,008.12 = 40,658.72 : x
2. Step 2: Convert to fraction form
   56,552.72/78,008.12 = 40,658.72/x
3. Step 3: Cross multiply
   56,552.72x = 78,008.12 × 40,658.72
4. Step 4: Simplify right side
   56,552.72x = 3,171,710,308.81
5. Step 5: Solve for x
   x = 3,171,710,308.81/56,552.72
6. Step 6: Final answer
   x = 56,084.13