Finding the Fourth Proportional to 76,508.79, 105,580.02 and 42,516.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,508.79 : 105,580.02 = 42,516.42 : x
2. Step 2: Convert to fraction form
   76,508.79/105,580.02 = 42,516.42/x
3. Step 3: Cross multiply
   76,508.79x = 105,580.02 × 42,516.42
4. Step 4: Simplify right side
   76,508.79x = 4,488,884,473.93
5. Step 5: Solve for x
   x = 4,488,884,473.93/76,508.79
6. Step 6: Final answer
   x = 58,671.49