Finding the Fourth Proportional to 72,284.76, 108,459.90 and 42,760.26

Step by Step Solution

1. Step 1: Write the proportion equation
   72,284.76 : 108,459.90 = 42,760.26 : x
2. Step 2: Convert to fraction form
   72,284.76/108,459.90 = 42,760.26/x
3. Step 3: Cross multiply
   72,284.76x = 108,459.90 × 42,760.26
4. Step 4: Simplify right side
   72,284.76x = 4,637,773,523.57
5. Step 5: Solve for x
   x = 4,637,773,523.57/72,284.76
6. Step 6: Final answer
   x = 64,159.77