Finding the Fourth Proportional to 140,700.86, 194,337.59 and 102,399.67

Step by Step Solution

1. Step 1: Write the proportion equation
   140,700.86 : 194,337.59 = 102,399.67 : x
2. Step 2: Convert to fraction form
   140,700.86/194,337.59 = 102,399.67/x
3. Step 3: Cross multiply
   140,700.86x = 194,337.59 × 102,399.67
4. Step 4: Simplify right side
   140,700.86x = 19,900,104,086.75
5. Step 5: Solve for x
   x = 19,900,104,086.75/140,700.86
6. Step 6: Final answer
   x = 141,435.56