Finding the Fourth Proportional to 78,345.90, 108,117 and 42,535.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,345.90 : 108,117 = 42,535.62 : x
2. Step 2: Convert to fraction form
   78,345.90/108,117 = 42,535.62/x
3. Step 3: Cross multiply
   78,345.90x = 108,117 × 42,535.62
4. Step 4: Simplify right side
   78,345.90x = 4,598,823,627.54
5. Step 5: Solve for x
   x = 4,598,823,627.54/78,345.90
6. Step 6: Final answer
   x = 58,698.97