Finding the Fourth Proportional to 103,829.55, 143,281.78 and 58,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,829.55 : 143,281.78 = 58,506.72 : x
2. Step 2: Convert to fraction form
   103,829.55/143,281.78 = 58,506.72/x
3. Step 3: Cross multiply
   103,829.55x = 143,281.78 × 58,506.72
4. Step 4: Simplify right side
   103,829.55x = 8,382,946,983.56
5. Step 5: Solve for x
   x = 8,382,946,983.56/103,829.55
6. Step 6: Final answer
   x = 80,737.58