Finding the Fourth Proportional to 78,160.81, 107,862.02 and 42,350.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,160.81 : 107,862.02 = 42,350.79 : x
2. Step 2: Convert to fraction form
   78,160.81/107,862.02 = 42,350.79/x
3. Step 3: Cross multiply
   78,160.81x = 107,862.02 × 42,350.79
4. Step 4: Simplify right side
   78,160.81x = 4,568,041,950.72
5. Step 5: Solve for x
   x = 4,568,041,950.72/78,160.81
6. Step 6: Final answer
   x = 58,444.15