Finding the Fourth Proportional to 131,780.79, 181,870.52 and 75,200.67

Step by Step Solution

1. Step 1: Write the proportion equation
   131,780.79 : 181,870.52 = 75,200.67 : x
2. Step 2: Convert to fraction form
   131,780.79/181,870.52 = 75,200.67/x
3. Step 3: Cross multiply
   131,780.79x = 181,870.52 × 75,200.67
4. Step 4: Simplify right side
   131,780.79x = 13,676,784,581.25
5. Step 5: Solve for x
   x = 13,676,784,581.25/131,780.79
6. Step 6: Final answer
   x = 103,784.36