Finding the Fourth Proportional to 78,965.32, 108,972.20 and 43,155.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,965.32 : 108,972.20 = 43,155.33 : x
2. Step 2: Convert to fraction form
   78,965.32/108,972.20 = 43,155.33/x
3. Step 3: Cross multiply
   78,965.32x = 108,972.20 × 43,155.33
4. Step 4: Simplify right side
   78,965.32x = 4,702,731,381.98
5. Step 5: Solve for x
   x = 4,702,731,381.98/78,965.32
6. Step 6: Final answer
   x = 59,554.39