Finding the Fourth Proportional to 143,086.51, 197,460.15 and 89,402.66

Step by Step Solution

1. Step 1: Write the proportion equation
   143,086.51 : 197,460.15 = 89,402.66 : x
2. Step 2: Convert to fraction form
   143,086.51/197,460.15 = 89,402.66/x
3. Step 3: Cross multiply
   143,086.51x = 197,460.15 × 89,402.66
4. Step 4: Simplify right side
   143,086.51x = 17,653,462,654.00
5. Step 5: Solve for x
   x = 17,653,462,654.00/143,086.51
6. Step 6: Final answer
   x = 123,376.15