Finding the Fourth Proportional to 127,071.38, 190,669.17 and 89,870.51

Step by Step Solution

1. Step 1: Write the proportion equation
   127,071.38 : 190,669.17 = 89,870.51 : x
2. Step 2: Convert to fraction form
   127,071.38/190,669.17 = 89,870.51/x
3. Step 3: Cross multiply
   127,071.38x = 190,669.17 × 89,870.51
4. Step 4: Simplify right side
   127,071.38x = 17,135,535,549.18
5. Step 5: Solve for x
   x = 17,135,535,549.18/127,071.38
6. Step 6: Final answer
   x = 134,849.68