Finding the Fourth Proportional to 127,628.50, 191,108.34 and 89,984.80

Step by Step Solution

1. Step 1: Write the proportion equation
   127,628.50 : 191,108.34 = 89,984.80 : x
2. Step 2: Convert to fraction form
   127,628.50/191,108.34 = 89,984.80/x
3. Step 3: Cross multiply
   127,628.50x = 191,108.34 × 89,984.80
4. Step 4: Simplify right side
   127,628.50x = 17,196,845,753.23
5. Step 5: Solve for x
   x = 17,196,845,753.23/127,628.50
6. Step 6: Final answer
   x = 134,741.42