Finding the Fourth Proportional to 78,543, 108,388.50 and 46,711.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,543 : 108,388.50 = 46,711.20 : x
2. Step 2: Convert to fraction form
   78,543/108,388.50 = 46,711.20/x
3. Step 3: Cross multiply
   78,543x = 108,388.50 × 46,711.20
4. Step 4: Simplify right side
   78,543x = 5,062,956,901.20
5. Step 5: Solve for x
   x = 5,062,956,901.20/78,543
6. Step 6: Final answer
   x = 64,460.96