Finding the Fourth Proportional to 91,711.30, 137,336.55 and 73,279.30

Step by Step Solution

1. Step 1: Write the proportion equation
   91,711.30 : 137,336.55 = 73,279.30 : x
2. Step 2: Convert to fraction form
   91,711.30/137,336.55 = 73,279.30/x
3. Step 3: Cross multiply
   91,711.30x = 137,336.55 × 73,279.30
4. Step 4: Simplify right side
   91,711.30x = 10,063,926,248.42
5. Step 5: Solve for x
   x = 10,063,926,248.42/91,711.30
6. Step 6: Final answer
   x = 109,734.86