Finding the Fourth Proportional to 56,807.34, 78,394.68 and 31,314.69

Step by Step Solution

1. Step 1: Write the proportion equation
   56,807.34 : 78,394.68 = 31,314.69 : x
2. Step 2: Convert to fraction form
   56,807.34/78,394.68 = 31,314.69/x
3. Step 3: Cross multiply
   56,807.34x = 78,394.68 × 31,314.69
4. Step 4: Simplify right side
   56,807.34x = 2,454,905,101.85
5. Step 5: Solve for x
   x = 2,454,905,101.85/56,807.34
6. Step 6: Final answer
   x = 43,214.58