Finding the Fourth Proportional to 56,505.29, 77,978.29 and 31,014.04

Step by Step Solution

1. Step 1: Write the proportion equation
   56,505.29 : 77,978.29 = 31,014.04 : x
2. Step 2: Convert to fraction form
   56,505.29/77,978.29 = 31,014.04/x
3. Step 3: Cross multiply
   56,505.29x = 77,978.29 × 31,014.04
4. Step 4: Simplify right side
   56,505.29x = 2,418,421,805.19
5. Step 5: Solve for x
   x = 2,418,421,805.19/56,505.29
6. Step 6: Final answer
   x = 42,799.92