Finding the Fourth Proportional to 56,644.63, 78,171.59 and 31,152.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,644.63 : 78,171.59 = 31,152.96 : x
2. Step 2: Convert to fraction form
   56,644.63/78,171.59 = 31,152.96/x
3. Step 3: Cross multiply
   56,644.63x = 78,171.59 × 31,152.96
4. Step 4: Simplify right side
   56,644.63x = 2,435,276,338.52
5. Step 5: Solve for x
   x = 2,435,276,338.52/56,644.63
6. Step 6: Final answer
   x = 42,992.19