Finding the Fourth Proportional to 64,259.46, 88,729.05 and 42,769.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,259.46 : 88,729.05 = 42,769.86 : x
2. Step 2: Convert to fraction form
   64,259.46/88,729.05 = 42,769.86/x
3. Step 3: Cross multiply
   64,259.46x = 88,729.05 × 42,769.86
4. Step 4: Simplify right side
   64,259.46x = 3,794,929,046.43
5. Step 5: Solve for x
   x = 3,794,929,046.43/64,259.46
6. Step 6: Final answer
   x = 59,056.35