Finding the Fourth Proportional to 56,646, 78,171.48 and 31,500.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,646 : 78,171.48 = 31,500.48 : x
2. Step 2: Convert to fraction form
   56,646/78,171.48 = 31,500.48/x
3. Step 3: Cross multiply
   56,646x = 78,171.48 × 31,500.48
4. Step 4: Simplify right side
   56,646x = 2,462,439,142.31
5. Step 5: Solve for x
   x = 2,462,439,142.31/56,646
6. Step 6: Final answer
   x = 43,470.66