Finding the Fourth Proportional to 56,109.76, 84,276.72 and 35,087.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,109.76 : 84,276.72 = 35,087.20 : x
2. Step 2: Convert to fraction form
   56,109.76/84,276.72 = 35,087.20/x
3. Step 3: Cross multiply
   56,109.76x = 84,276.72 × 35,087.20
4. Step 4: Simplify right side
   56,109.76x = 2,957,034,129.98
5. Step 5: Solve for x
   x = 2,957,034,129.98/56,109.76
6. Step 6: Final answer
   x = 52,700.89