Finding the Fourth Proportional to 56,851.50, 78,457.50 and 31,701

Step by Step Solution

1. Step 1: Write the proportion equation
   56,851.50 : 78,457.50 = 31,701 : x
2. Step 2: Convert to fraction form
   56,851.50/78,457.50 = 31,701/x
3. Step 3: Cross multiply
   56,851.50x = 78,457.50 × 31,701
4. Step 4: Simplify right side
   56,851.50x = 2,487,181,207.50
5. Step 5: Solve for x
   x = 2,487,181,207.50/56,851.50
6. Step 6: Final answer
   x = 43,748.73