Finding the Fourth Proportional to 56,609.34, 78,123.24 and 31,458.84

Step by Step Solution

1. Step 1: Write the proportion equation
   56,609.34 : 78,123.24 = 31,458.84 : x
2. Step 2: Convert to fraction form
   56,609.34/78,123.24 = 31,458.84/x
3. Step 3: Cross multiply
   56,609.34x = 78,123.24 × 31,458.84
4. Step 4: Simplify right side
   56,609.34x = 2,457,666,507.44
5. Step 5: Solve for x
   x = 2,457,666,507.44/56,609.34
6. Step 6: Final answer
   x = 43,414.51