Finding the Fourth Proportional to 78,929.64, 108,925.30 and 43,121.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,929.64 : 108,925.30 = 43,121.96 : x
2. Step 2: Convert to fraction form
   78,929.64/108,925.30 = 43,121.96/x
3. Step 3: Cross multiply
   78,929.64x = 108,925.30 × 43,121.96
4. Step 4: Simplify right side
   78,929.64x = 4,697,072,429.59
5. Step 5: Solve for x
   x = 4,697,072,429.59/78,929.64
6. Step 6: Final answer
   x = 59,509.61