Finding the Fourth Proportional to 137,103.32, 189,123.72 and 80,503.76

Step by Step Solution

1. Step 1: Write the proportion equation
   137,103.32 : 189,123.72 = 80,503.76 : x
2. Step 2: Convert to fraction form
   137,103.32/189,123.72 = 80,503.76/x
3. Step 3: Cross multiply
   137,103.32x = 189,123.72 × 80,503.76
4. Step 4: Simplify right side
   137,103.32x = 15,225,170,565.19
5. Step 5: Solve for x
   x = 15,225,170,565.19/137,103.32
6. Step 6: Final answer
   x = 111,048.88