Finding the Fourth Proportional to 57,681.12, 79,599.72 and 31,185.12

Step by Step Solution

1. Step 1: Write the proportion equation
   57,681.12 : 79,599.72 = 31,185.12 : x
2. Step 2: Convert to fraction form
   57,681.12/79,599.72 = 31,185.12/x
3. Step 3: Cross multiply
   57,681.12x = 79,599.72 × 31,185.12
4. Step 4: Simplify right side
   57,681.12x = 2,482,326,820.17
5. Step 5: Solve for x
   x = 2,482,326,820.17/57,681.12
6. Step 6: Final answer
   x = 43,035.34