Finding the Fourth Proportional to 58,419.32, 80,618.55 and 31,561.74

Step by Step Solution

1. Step 1: Write the proportion equation
   58,419.32 : 80,618.55 = 31,561.74 : x
2. Step 2: Convert to fraction form
   58,419.32/80,618.55 = 31,561.74/x
3. Step 3: Cross multiply
   58,419.32x = 80,618.55 × 31,561.74
4. Step 4: Simplify right side
   58,419.32x = 2,544,461,595.92
5. Step 5: Solve for x
   x = 2,544,461,595.92/58,419.32
6. Step 6: Final answer
   x = 43,555.14