Finding the Fourth Proportional to 58,680.72, 80,873.64 and 42,739.92

Step by Step Solution

1. Step 1: Write the proportion equation
   58,680.72 : 80,873.64 = 42,739.92 : x
2. Step 2: Convert to fraction form
   58,680.72/80,873.64 = 42,739.92/x
3. Step 3: Cross multiply
   58,680.72x = 80,873.64 × 42,739.92
4. Step 4: Simplify right side
   58,680.72x = 3,456,532,903.71
5. Step 5: Solve for x
   x = 3,456,532,903.71/58,680.72
6. Step 6: Final answer
   x = 58,904.06