Finding the Fourth Proportional to 140,475.80, 193,859.34 and 76,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,475.80 : 193,859.34 = 76,817.72 : x
2. Step 2: Convert to fraction form
   140,475.80/193,859.34 = 76,817.72/x
3. Step 3: Cross multiply
   140,475.80x = 193,859.34 × 76,817.72
4. Step 4: Simplify right side
   140,475.80x = 14,891,832,499.50
5. Step 5: Solve for x
   x = 14,891,832,499.50/140,475.80
6. Step 6: Final answer
   x = 106,009.95