Finding the Fourth Proportional to 78,595.42, 108,461.69 and 42,785.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,595.42 : 108,461.69 = 42,785.70 : x
2. Step 2: Convert to fraction form
   78,595.42/108,461.69 = 42,785.70/x
3. Step 3: Cross multiply
   78,595.42x = 108,461.69 × 42,785.70
4. Step 4: Simplify right side
   78,595.42x = 4,640,609,329.83
5. Step 5: Solve for x
   x = 4,640,609,329.83/78,595.42
6. Step 6: Final answer
   x = 59,044.27