Finding the Fourth Proportional to 78,640.02, 108,524.46 and 42,830.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,640.02 : 108,524.46 = 42,830.01 : x
2. Step 2: Convert to fraction form
   78,640.02/108,524.46 = 42,830.01/x
3. Step 3: Cross multiply
   78,640.02x = 108,524.46 × 42,830.01
4. Step 4: Simplify right side
   78,640.02x = 4,648,103,707.04
5. Step 5: Solve for x
   x = 4,648,103,707.04/78,640.02
6. Step 6: Final answer
   x = 59,106.09