Finding the Fourth Proportional to 78,111.90, 107,793.09 and 42,301.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,111.90 : 107,793.09 = 42,301.62 : x
2. Step 2: Convert to fraction form
   78,111.90/107,793.09 = 42,301.62/x
3. Step 3: Cross multiply
   78,111.90x = 107,793.09 × 42,301.62
4. Step 4: Simplify right side
   78,111.90x = 4,559,822,331.81
5. Step 5: Solve for x
   x = 4,559,822,331.81/78,111.90
6. Step 6: Final answer
   x = 58,375.51