Finding the Fourth Proportional to 71,081.15, 98,123.40 and 42,410.79

Step by Step Solution

1. Step 1: Write the proportion equation
   71,081.15 : 98,123.40 = 42,410.79 : x
2. Step 2: Convert to fraction form
   71,081.15/98,123.40 = 42,410.79/x
3. Step 3: Cross multiply
   71,081.15x = 98,123.40 × 42,410.79
4. Step 4: Simplify right side
   71,081.15x = 4,161,490,911.49
5. Step 5: Solve for x
   x = 4,161,490,911.49/71,081.15
6. Step 6: Final answer
   x = 58,545.64