Finding the Fourth Proportional to 127,587.72, 191,162.87 and 90,080.67

Step by Step Solution

1. Step 1: Write the proportion equation
   127,587.72 : 191,162.87 = 90,080.67 : x
2. Step 2: Convert to fraction form
   127,587.72/191,162.87 = 90,080.67/x
3. Step 3: Cross multiply
   127,587.72x = 191,162.87 × 90,080.67
4. Step 4: Simplify right side
   127,587.72x = 17,220,079,408.72
5. Step 5: Solve for x
   x = 17,220,079,408.72/127,587.72
6. Step 6: Final answer
   x = 134,966.59