Finding the Fourth Proportional to 142,858.71, 197,165.06 and 88,428.33

Step by Step Solution

1. Step 1: Write the proportion equation
   142,858.71 : 197,165.06 = 88,428.33 : x
2. Step 2: Convert to fraction form
   142,858.71/197,165.06 = 88,428.33/x
3. Step 3: Cross multiply
   142,858.71x = 197,165.06 × 88,428.33
4. Step 4: Simplify right side
   142,858.71x = 17,434,976,879.61
5. Step 5: Solve for x
   x = 17,434,976,879.61/142,858.71
6. Step 6: Final answer
   x = 122,043.50