Finding the Fourth Proportional to 140,328.72, 193,656.42 and 76,670.46

Step by Step Solution

1. Step 1: Write the proportion equation
   140,328.72 : 193,656.42 = 76,670.46 : x
2. Step 2: Convert to fraction form
   140,328.72/193,656.42 = 76,670.46/x
3. Step 3: Cross multiply
   140,328.72x = 193,656.42 × 76,670.46
4. Step 4: Simplify right side
   140,328.72x = 14,847,726,803.35
5. Step 5: Solve for x
   x = 14,847,726,803.35/140,328.72
6. Step 6: Final answer
   x = 105,806.76