Finding the Fourth Proportional to 127,629, 191,109.06 and 89,985.33

Step by Step Solution

1. Step 1: Write the proportion equation
   127,629 : 191,109.06 = 89,985.33 : x
2. Step 2: Convert to fraction form
   127,629/191,109.06 = 89,985.33/x
3. Step 3: Cross multiply
   127,629x = 191,109.06 × 89,985.33
4. Step 4: Simplify right side
   127,629x = 17,197,011,830.09
5. Step 5: Solve for x
   x = 17,197,011,830.09/127,629
6. Step 6: Final answer
   x = 134,742.20