Finding the Fourth Proportional to 56,431.52, 77,874.72 and 31,280.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,431.52 : 77,874.72 = 31,280.48 : x
2. Step 2: Convert to fraction form
   56,431.52/77,874.72 = 31,280.48/x
3. Step 3: Cross multiply
   56,431.52x = 77,874.72 × 31,280.48
4. Step 4: Simplify right side
   56,431.52x = 2,435,958,621.47
5. Step 5: Solve for x
   x = 2,435,958,621.47/56,431.52
6. Step 6: Final answer
   x = 43,166.63