Finding the Fourth Proportional to 56,856.38, 78,461.88 and 31,362.17

Step by Step Solution

1. Step 1: Write the proportion equation
   56,856.38 : 78,461.88 = 31,362.17 : x
2. Step 2: Convert to fraction form
   56,856.38/78,461.88 = 31,362.17/x
3. Step 3: Cross multiply
   56,856.38x = 78,461.88 × 31,362.17
4. Step 4: Simplify right side
   56,856.38x = 2,460,734,819.08
5. Step 5: Solve for x
   x = 2,460,734,819.08/56,856.38
6. Step 6: Final answer
   x = 43,279.84