Finding the Fourth Proportional to 56,555.53, 78,046.77 and 31,405.03

Step by Step Solution

1. Step 1: Write the proportion equation
   56,555.53 : 78,046.77 = 31,405.03 : x
2. Step 2: Convert to fraction form
   56,555.53/78,046.77 = 31,405.03/x
3. Step 3: Cross multiply
   56,555.53x = 78,046.77 × 31,405.03
4. Step 4: Simplify right side
   56,555.53x = 2,451,061,075.91
5. Step 5: Solve for x
   x = 2,451,061,075.91/56,555.53
6. Step 6: Final answer
   x = 43,339.02