Finding the Fourth Proportional to 80,111.03, 120,238.76 and 42,702.26

Step by Step Solution

1. Step 1: Write the proportion equation
   80,111.03 : 120,238.76 = 42,702.26 : x
2. Step 2: Convert to fraction form
   80,111.03/120,238.76 = 42,702.26/x
3. Step 3: Cross multiply
   80,111.03x = 120,238.76 × 42,702.26
4. Step 4: Simplify right side
   80,111.03x = 5,134,465,976.89
5. Step 5: Solve for x
   x = 5,134,465,976.89/80,111.03
6. Step 6: Final answer
   x = 64,091.88