Finding the Fourth Proportional to 56,820.02, 78,412.17 and 31,327.40

Step by Step Solution

1. Step 1: Write the proportion equation
   56,820.02 : 78,412.17 = 31,327.40 : x
2. Step 2: Convert to fraction form
   56,820.02/78,412.17 = 31,327.40/x
3. Step 3: Cross multiply
   56,820.02x = 78,412.17 × 31,327.40
4. Step 4: Simplify right side
   56,820.02x = 2,456,449,022.40
5. Step 5: Solve for x
   x = 2,456,449,022.40/56,820.02
6. Step 6: Final answer
   x = 43,232.11