Finding the Fourth Proportional to 56,868.36, 78,478.61 and 31,375.04

Step by Step Solution

1. Step 1: Write the proportion equation
   56,868.36 : 78,478.61 = 31,375.04 : x
2. Step 2: Convert to fraction form
   56,868.36/78,478.61 = 31,375.04/x
3. Step 3: Cross multiply
   56,868.36x = 78,478.61 × 31,375.04
4. Step 4: Simplify right side
   56,868.36x = 2,462,269,390.58
5. Step 5: Solve for x
   x = 2,462,269,390.58/56,868.36
6. Step 6: Final answer
   x = 43,297.70