Finding the Fourth Proportional to 56,801.08, 78,390.01 and 31,311.98

Step by Step Solution

1. Step 1: Write the proportion equation
   56,801.08 : 78,390.01 = 31,311.98 : x
2. Step 2: Convert to fraction form
   56,801.08/78,390.01 = 31,311.98/x
3. Step 3: Cross multiply
   56,801.08x = 78,390.01 × 31,311.98
4. Step 4: Simplify right side
   56,801.08x = 2,454,546,425.32
5. Step 5: Solve for x
   x = 2,454,546,425.32/56,801.08
6. Step 6: Final answer
   x = 43,213.02