Finding the Fourth Proportional to 56,548,591.92, 78,040,397.88 and 42,585,311.79

Step by Step Solution

1. Step 1: Write the proportion equation
   56,548,591.92 : 78,040,397.88 = 42,585,311.79 : x
2. Step 2: Convert to fraction form
   56,548,591.92/78,040,397.88 = 42,585,311.79/x
3. Step 3: Cross multiply
   56,548,591.92x = 78,040,397.88 × 42,585,311.79
4. Step 4: Simplify right side
   56,548,591.92x = 3,323,374,675,935,454.50
5. Step 5: Solve for x
   x = 3,323,374,675,935,454.50/56,548,591.92
6. Step 6: Final answer
   x = 58,770,246.32