Finding the Fourth Proportional to 56,624.43, 78,139.58 and 31,475.55

Step by Step Solution

1. Step 1: Write the proportion equation
   56,624.43 : 78,139.58 = 31,475.55 : x
2. Step 2: Convert to fraction form
   56,624.43/78,139.58 = 31,475.55/x
3. Step 3: Cross multiply
   56,624.43x = 78,139.58 × 31,475.55
4. Step 4: Simplify right side
   56,624.43x = 2,459,486,099.89
5. Step 5: Solve for x
   x = 2,459,486,099.89/56,624.43
6. Step 6: Final answer
   x = 43,435.07