Finding the Fourth Proportional to 56,899.76, 78,521.72 and 31,749.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,899.76 : 78,521.72 = 31,749.24 : x
2. Step 2: Convert to fraction form
   56,899.76/78,521.72 = 31,749.24/x
3. Step 3: Cross multiply
   56,899.76x = 78,521.72 × 31,749.24
4. Step 4: Simplify right side
   56,899.76x = 2,493,004,933.49
5. Step 5: Solve for x
   x = 2,493,004,933.49/56,899.76
6. Step 6: Final answer
   x = 43,813.98