Finding the Fourth Proportional to 104,407.08, 143,986.82 and 88,308.20

Step by Step Solution

1. Step 1: Write the proportion equation
   104,407.08 : 143,986.82 = 88,308.20 : x
2. Step 2: Convert to fraction form
   104,407.08/143,986.82 = 88,308.20/x
3. Step 3: Cross multiply
   104,407.08x = 143,986.82 × 88,308.20
4. Step 4: Simplify right side
   104,407.08x = 12,715,215,736.45
5. Step 5: Solve for x
   x = 12,715,215,736.45/104,407.08
6. Step 6: Final answer
   x = 121,785.00