Finding the Fourth Proportional to 90,181.76, 135,182.52 and 42,712.52

Step by Step Solution

1. Step 1: Write the proportion equation
   90,181.76 : 135,182.52 = 42,712.52 : x
2. Step 2: Convert to fraction form
   90,181.76/135,182.52 = 42,712.52/x
3. Step 3: Cross multiply
   90,181.76x = 135,182.52 × 42,712.52
4. Step 4: Simplify right side
   90,181.76x = 5,773,985,413.24
5. Step 5: Solve for x
   x = 5,773,985,413.24/90,181.76
6. Step 6: Final answer
   x = 64,026.09