Finding the Fourth Proportional to 105,274.24, 145,272.33 and 57,527.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,274.24 : 145,272.33 = 57,527.98 : x
2. Step 2: Convert to fraction form
   105,274.24/145,272.33 = 57,527.98/x
3. Step 3: Cross multiply
   105,274.24x = 145,272.33 × 57,527.98
4. Step 4: Simplify right side
   105,274.24x = 8,357,223,694.79
5. Step 5: Solve for x
   x = 8,357,223,694.79/105,274.24
6. Step 6: Final answer
   x = 79,385.27