Finding the Fourth Proportional to 107,814.27, 161,524.26 and 78,158.55

Step by Step Solution

1. Step 1: Write the proportion equation
   107,814.27 : 161,524.26 = 78,158.55 : x
2. Step 2: Convert to fraction form
   107,814.27/161,524.26 = 78,158.55/x
3. Step 3: Cross multiply
   107,814.27x = 161,524.26 × 78,158.55
4. Step 4: Simplify right side
   107,814.27x = 12,624,501,951.42
5. Step 5: Solve for x
   x = 12,624,501,951.42/107,814.27
6. Step 6: Final answer
   x = 117,094.91