Finding the Fourth Proportional to 78,160.72, 107,861.92 and 42,351.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,160.72 : 107,861.92 = 42,351.04 : x
2. Step 2: Convert to fraction form
   78,160.72/107,861.92 = 42,351.04/x
3. Step 3: Cross multiply
   78,160.72x = 107,861.92 × 42,351.04
4. Step 4: Simplify right side
   78,160.72x = 4,568,064,488.40
5. Step 5: Solve for x
   x = 4,568,064,488.40/78,160.72
6. Step 6: Final answer
   x = 58,444.50