Finding the Fourth Proportional to 56,748.78, 78,315.72 and 31,598.28

Step by Step Solution

1. Step 1: Write the proportion equation
   56,748.78 : 78,315.72 = 31,598.28 : x
2. Step 2: Convert to fraction form
   56,748.78/78,315.72 = 31,598.28/x
3. Step 3: Cross multiply
   56,748.78x = 78,315.72 × 31,598.28
4. Step 4: Simplify right side
   56,748.78x = 2,474,642,048.96
5. Step 5: Solve for x
   x = 2,474,642,048.96/56,748.78
6. Step 6: Final answer
   x = 43,606.96