Finding the Fourth Proportional to 78,644.42, 108,529.46 and 42,834.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,644.42 : 108,529.46 = 42,834.32 : x
2. Step 2: Convert to fraction form
   78,644.42/108,529.46 = 42,834.32/x
3. Step 3: Cross multiply
   78,644.42x = 108,529.46 × 42,834.32
4. Step 4: Simplify right side
   78,644.42x = 4,648,785,076.42
5. Step 5: Solve for x
   x = 4,648,785,076.42/78,644.42
6. Step 6: Final answer
   x = 59,111.45