Finding the Fourth Proportional to 80,215.34, 120,541.10 and 42,801.84

Step by Step Solution

1. Step 1: Write the proportion equation
   80,215.34 : 120,541.10 = 42,801.84 : x
2. Step 2: Convert to fraction form
   80,215.34/120,541.10 = 42,801.84/x
3. Step 3: Cross multiply
   80,215.34x = 120,541.10 × 42,801.84
4. Step 4: Simplify right side
   80,215.34x = 5,159,380,661.61
5. Step 5: Solve for x
   x = 5,159,380,661.61/80,215.34
6. Step 6: Final answer
   x = 64,319.13