Finding the Fourth Proportional to 58,638.65, 80,921.30 and 34,434.81

Step by Step Solution

1. Step 1: Write the proportion equation
   58,638.65 : 80,921.30 = 34,434.81 : x
2. Step 2: Convert to fraction form
   58,638.65/80,921.30 = 34,434.81/x
3. Step 3: Cross multiply
   58,638.65x = 80,921.30 × 34,434.81
4. Step 4: Simplify right side
   58,638.65x = 2,786,509,418.28
5. Step 5: Solve for x
   x = 2,786,509,418.28/58,638.65
6. Step 6: Final answer
   x = 47,520.02