Finding the Fourth Proportional to 56,900.12, 78,517.50 and 31,749.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,900.12 : 78,517.50 = 31,749.08 : x
2. Step 2: Convert to fraction form
   56,900.12/78,517.50 = 31,749.08/x
3. Step 3: Cross multiply
   56,900.12x = 78,517.50 × 31,749.08
4. Step 4: Simplify right side
   56,900.12x = 2,492,858,388.90
5. Step 5: Solve for x
   x = 2,492,858,388.90/56,900.12
6. Step 6: Final answer
   x = 43,811.13