Finding the Fourth Proportional to 112,200.98, 154,814.79 and 71,381.31

Step by Step Solution

1. Step 1: Write the proportion equation
   112,200.98 : 154,814.79 = 71,381.31 : x
2. Step 2: Convert to fraction form
   112,200.98/154,814.79 = 71,381.31/x
3. Step 3: Cross multiply
   112,200.98x = 154,814.79 × 71,381.31
4. Step 4: Simplify right side
   112,200.98x = 11,050,882,517.57
5. Step 5: Solve for x
   x = 11,050,882,517.57/112,200.98
6. Step 6: Final answer
   x = 98,491.86