Finding the Fourth Proportional to 86,567.27, 129,909.23 and 33,970.55

Step by Step Solution

1. Step 1: Write the proportion equation
   86,567.27 : 129,909.23 = 33,970.55 : x
2. Step 2: Convert to fraction form
   86,567.27/129,909.23 = 33,970.55/x
3. Step 3: Cross multiply
   86,567.27x = 129,909.23 × 33,970.55
4. Step 4: Simplify right side
   86,567.27x = 4,413,088,402.88
5. Step 5: Solve for x
   x = 4,413,088,402.88/86,567.27
6. Step 6: Final answer
   x = 50,978.72