Finding the Fourth Proportional to 78,690, 108,592.20 and 43,362

Step by Step Solution

1. Step 1: Write the proportion equation
   78,690 : 108,592.20 = 43,362 : x
2. Step 2: Convert to fraction form
   78,690/108,592.20 = 43,362/x
3. Step 3: Cross multiply
   78,690x = 108,592.20 × 43,362
4. Step 4: Simplify right side
   78,690x = 4,708,774,976.40
5. Step 5: Solve for x
   x = 4,708,774,976.40/78,690
6. Step 6: Final answer
   x = 59,839.56