Finding the Fourth Proportional to 114,971.43, 158,524.86 and 78,690.37

Step by Step Solution

1. Step 1: Write the proportion equation
   114,971.43 : 158,524.86 = 78,690.37 : x
2. Step 2: Convert to fraction form
   114,971.43/158,524.86 = 78,690.37/x
3. Step 3: Cross multiply
   114,971.43x = 158,524.86 × 78,690.37
4. Step 4: Simplify right side
   114,971.43x = 12,474,379,887.60
5. Step 5: Solve for x
   x = 12,474,379,887.60/114,971.43
6. Step 6: Final answer
   x = 108,499.82