Finding the Fourth Proportional to 56,773.86, 78,344.82 and 31,279.32

Step by Step Solution

1. Step 1: Write the proportion equation
   56,773.86 : 78,344.82 = 31,279.32 : x
2. Step 2: Convert to fraction form
   56,773.86/78,344.82 = 31,279.32/x
3. Step 3: Cross multiply
   56,773.86x = 78,344.82 × 31,279.32
4. Step 4: Simplify right side
   56,773.86x = 2,450,572,695.12
5. Step 5: Solve for x
   x = 2,450,572,695.12/56,773.86
6. Step 6: Final answer
   x = 43,163.75