Finding the Fourth Proportional to 56,644.62, 78,170.48 and 31,152.10

Step by Step Solution

1. Step 1: Write the proportion equation
   56,644.62 : 78,170.48 = 31,152.10 : x
2. Step 2: Convert to fraction form
   56,644.62/78,170.48 = 31,152.10/x
3. Step 3: Cross multiply
   56,644.62x = 78,170.48 × 31,152.10
4. Step 4: Simplify right side
   56,644.62x = 2,435,174,063.40
5. Step 5: Solve for x
   x = 2,435,174,063.40/56,644.62
6. Step 6: Final answer
   x = 42,990.39