Finding the Fourth Proportional to 140,233.12, 193,520.24 and 76,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,233.12 : 193,520.24 = 76,570.72 : x
2. Step 2: Convert to fraction form
   140,233.12/193,520.24 = 76,570.72/x
3. Step 3: Cross multiply
   140,233.12x = 193,520.24 × 76,570.72
4. Step 4: Simplify right side
   140,233.12x = 14,817,984,111.37
5. Step 5: Solve for x
   x = 14,817,984,111.37/140,233.12
6. Step 6: Final answer
   x = 105,666.79