Finding the Fourth Proportional to 56,931.12, 78,567.98 and 31,437.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,931.12 : 78,567.98 = 31,437.38 : x
2. Step 2: Convert to fraction form
   56,931.12/78,567.98 = 31,437.38/x
3. Step 3: Cross multiply
   56,931.12x = 78,567.98 × 31,437.38
4. Step 4: Simplify right side
   56,931.12x = 2,469,971,443.09
5. Step 5: Solve for x
   x = 2,469,971,443.09/56,931.12
6. Step 6: Final answer
   x = 43,385.26