Finding the Fourth Proportional to 56,589.12, 78,089.94 and 31,437

Step by Step Solution

1. Step 1: Write the proportion equation
   56,589.12 : 78,089.94 = 31,437 : x
2. Step 2: Convert to fraction form
   56,589.12/78,089.94 = 31,437/x
3. Step 3: Cross multiply
   56,589.12x = 78,089.94 × 31,437
4. Step 4: Simplify right side
   56,589.12x = 2,454,913,443.78
5. Step 5: Solve for x
   x = 2,454,913,443.78/56,589.12
6. Step 6: Final answer
   x = 43,381.37