Finding the Fourth Proportional to 103,448.56, 142,758.96 and 58,126.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,448.56 : 142,758.96 = 58,126.72 : x
2. Step 2: Convert to fraction form
   103,448.56/142,758.96 = 58,126.72/x
3. Step 3: Cross multiply
   103,448.56x = 142,758.96 × 58,126.72
4. Step 4: Simplify right side
   103,448.56x = 8,298,110,095.41
5. Step 5: Solve for x
   x = 8,298,110,095.41/103,448.56
6. Step 6: Final answer
   x = 80,214.84