Finding the Fourth Proportional to 57,111.56, 78,814.06 and 31,961.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,111.56 : 78,814.06 = 31,961.06 : x
2. Step 2: Convert to fraction form
   57,111.56/78,814.06 = 31,961.06/x
3. Step 3: Cross multiply
   57,111.56x = 78,814.06 × 31,961.06
4. Step 4: Simplify right side
   57,111.56x = 2,518,980,900.50
5. Step 5: Solve for x
   x = 2,518,980,900.50/57,111.56
6. Step 6: Final answer
   x = 44,106.32