Finding the Fourth Proportional to 141,802.69, 195,689.02 and 78,142.76

Step by Step Solution

1. Step 1: Write the proportion equation
   141,802.69 : 195,689.02 = 78,142.76 : x
2. Step 2: Convert to fraction form
   141,802.69/195,689.02 = 78,142.76/x
3. Step 3: Cross multiply
   141,802.69x = 195,689.02 × 78,142.76
4. Step 4: Simplify right side
   141,802.69x = 15,291,680,124.50
5. Step 5: Solve for x
   x = 15,291,680,124.50/141,802.69
6. Step 6: Final answer
   x = 107,837.73