Finding the Fourth Proportional to 56,835.18, 78,429.15 and 31,340.34

Step by Step Solution

1. Step 1: Write the proportion equation
   56,835.18 : 78,429.15 = 31,340.34 : x
2. Step 2: Convert to fraction form
   56,835.18/78,429.15 = 31,340.34/x
3. Step 3: Cross multiply
   56,835.18x = 78,429.15 × 31,340.34
4. Step 4: Simplify right side
   56,835.18x = 2,457,996,226.91
5. Step 5: Solve for x
   x = 2,457,996,226.91/56,835.18
6. Step 6: Final answer
   x = 43,247.80