Finding the Fourth Proportional to 140,059.59, 193,283.63 and 76,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,059.59 : 193,283.63 = 76,398.72 : x
2. Step 2: Convert to fraction form
   140,059.59/193,283.63 = 76,398.72/x
3. Step 3: Cross multiply
   140,059.59x = 193,283.63 × 76,398.72
4. Step 4: Simplify right side
   140,059.59x = 14,766,621,928.95
5. Step 5: Solve for x
   x = 14,766,621,928.95/140,059.59
6. Step 6: Final answer
   x = 105,430.99