Finding the Fourth Proportional to 56,849.64, 78,454.14 and 31,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,849.64 : 78,454.14 = 31,356.72 : x
2. Step 2: Convert to fraction form
   56,849.64/78,454.14 = 31,356.72/x
3. Step 3: Cross multiply
   56,849.64x = 78,454.14 × 31,356.72
4. Step 4: Simplify right side
   56,849.64x = 2,460,064,500.82
5. Step 5: Solve for x
   x = 2,460,064,500.82/56,849.64
6. Step 6: Final answer
   x = 43,273.18