Finding the Fourth Proportional to 56,754.02, 78,317.48 and 31,255.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,754.02 : 78,317.48 = 31,255.42 : x
2. Step 2: Convert to fraction form
   56,754.02/78,317.48 = 31,255.42/x
3. Step 3: Cross multiply
   56,754.02x = 78,317.48 × 31,255.42
4. Step 4: Simplify right side
   56,754.02x = 2,447,845,613.09
5. Step 5: Solve for x
   x = 2,447,845,613.09/56,754.02
6. Step 6: Final answer
   x = 43,130.79