Finding the Fourth Proportional to 140,971.68, 194,487.54 and 89,986.32

Step by Step Solution

1. Step 1: Write the proportion equation
   140,971.68 : 194,487.54 = 89,986.32 : x
2. Step 2: Convert to fraction form
   140,971.68/194,487.54 = 89,986.32/x
3. Step 3: Cross multiply
   140,971.68x = 194,487.54 × 89,986.32
4. Step 4: Simplify right side
   140,971.68x = 17,501,218,010.45
5. Step 5: Solve for x
   x = 17,501,218,010.45/140,971.68
6. Step 6: Final answer
   x = 124,147.05