Finding the Fourth Proportional to 114,969.43, 158,522.10 and 78,688.37

Step by Step Solution

1. Step 1: Write the proportion equation
   114,969.43 : 158,522.10 = 78,688.37 : x
2. Step 2: Convert to fraction form
   114,969.43/158,522.10 = 78,688.37/x
3. Step 3: Cross multiply
   114,969.43x = 158,522.10 × 78,688.37
4. Step 4: Simplify right side
   114,969.43x = 12,473,845,657.98
5. Step 5: Solve for x
   x = 12,473,845,657.98/114,969.43
6. Step 6: Final answer
   x = 108,497.07