Finding the Fourth Proportional to 76,147.62, 105,087.15 and 42,613.62

Step by Step Solution

1. Step 1: Write the proportion equation
   76,147.62 : 105,087.15 = 42,613.62 : x
2. Step 2: Convert to fraction form
   76,147.62/105,087.15 = 42,613.62/x
3. Step 3: Cross multiply
   76,147.62x = 105,087.15 × 42,613.62
4. Step 4: Simplify right side
   76,147.62x = 4,478,143,876.98
5. Step 5: Solve for x
   x = 4,478,143,876.98/76,147.62
6. Step 6: Final answer
   x = 58,808.72