Finding the Fourth Proportional to 58,819.64, 81,180.78 and 42,956.60

Step by Step Solution

1. Step 1: Write the proportion equation
   58,819.64 : 81,180.78 = 42,956.60 : x
2. Step 2: Convert to fraction form
   58,819.64/81,180.78 = 42,956.60/x
3. Step 3: Cross multiply
   58,819.64x = 81,180.78 × 42,956.60
4. Step 4: Simplify right side
   58,819.64x = 3,487,250,294.15
5. Step 5: Solve for x
   x = 3,487,250,294.15/58,819.64
6. Step 6: Final answer
   x = 59,287.18