Finding the Fourth Proportional to 56,618.09, 78,144.29 and 43,165.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,618.09 : 78,144.29 = 43,165.31 : x
2. Step 2: Convert to fraction form
   56,618.09/78,144.29 = 43,165.31/x
3. Step 3: Cross multiply
   56,618.09x = 78,144.29 × 43,165.31
4. Step 4: Simplify right side
   56,618.09x = 3,373,122,502.58
5. Step 5: Solve for x
   x = 3,373,122,502.58/56,618.09
6. Step 6: Final answer
   x = 59,576.76