Finding the Fourth Proportional to 143,090.15, 197,465.16 and 89,406.29

Step by Step Solution

1. Step 1: Write the proportion equation
   143,090.15 : 197,465.16 = 89,406.29 : x
2. Step 2: Convert to fraction form
   143,090.15/197,465.16 = 89,406.29/x
3. Step 3: Cross multiply
   143,090.15x = 197,465.16 × 89,406.29
4. Step 4: Simplify right side
   143,090.15x = 17,654,626,372.53
5. Step 5: Solve for x
   x = 17,654,626,372.53/143,090.15
6. Step 6: Final answer
   x = 123,381.15