Finding the Fourth Proportional to 103,411.65, 142,704.42 and 63,192.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,411.65 : 142,704.42 = 63,192.72 : x
2. Step 2: Convert to fraction form
   103,411.65/142,704.42 = 63,192.72/x
3. Step 3: Cross multiply
   103,411.65x = 142,704.42 × 63,192.72
4. Step 4: Simplify right side
   103,411.65x = 9,017,880,455.82
5. Step 5: Solve for x
   x = 9,017,880,455.82/103,411.65
6. Step 6: Final answer
   x = 87,203.72