Finding the Fourth Proportional to 56,718.02, 78,267.82 and 31,219.43

Step by Step Solution

1. Step 1: Write the proportion equation
   56,718.02 : 78,267.82 = 31,219.43 : x
2. Step 2: Convert to fraction form
   56,718.02/78,267.82 = 31,219.43/x
3. Step 3: Cross multiply
   56,718.02x = 78,267.82 × 31,219.43
4. Step 4: Simplify right side
   56,718.02x = 2,443,476,316.89
5. Step 5: Solve for x
   x = 2,443,476,316.89/56,718.02
6. Step 6: Final answer
   x = 43,081.13