Finding the Fourth Proportional to 103,048.93, 142,216.28 and 57,726.32

Step by Step Solution

1. Step 1: Write the proportion equation
   103,048.93 : 142,216.28 = 57,726.32 : x
2. Step 2: Convert to fraction form
   103,048.93/142,216.28 = 57,726.32/x
3. Step 3: Cross multiply
   103,048.93x = 142,216.28 × 57,726.32
4. Step 4: Simplify right side
   103,048.93x = 8,209,622,667.57
5. Step 5: Solve for x
   x = 8,209,622,667.57/103,048.93
6. Step 6: Final answer
   x = 79,667.23