Finding the Fourth Proportional to 103,695.69, 142,798.80 and 90,077.52

Step by Step Solution

1. Step 1: Write the proportion equation
   103,695.69 : 142,798.80 = 90,077.52 : x
2. Step 2: Convert to fraction form
   103,695.69/142,798.80 = 90,077.52/x
3. Step 3: Cross multiply
   103,695.69x = 142,798.80 × 90,077.52
4. Step 4: Simplify right side
   103,695.69x = 12,862,961,326.33
5. Step 5: Solve for x
   x = 12,862,961,326.33/103,695.69
6. Step 6: Final answer
   x = 124,045.28