Finding the Fourth Proportional to 78,556.48, 108,407.42 and 42,746.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,556.48 : 108,407.42 = 42,746.62 : x
2. Step 2: Convert to fraction form
   78,556.48/108,407.42 = 42,746.62/x
3. Step 3: Cross multiply
   78,556.48x = 108,407.42 × 42,746.62
4. Step 4: Simplify right side
   78,556.48x = 4,634,050,787.92
5. Step 5: Solve for x
   x = 4,634,050,787.92/78,556.48
6. Step 6: Final answer
   x = 58,990.05