Finding the Fourth Proportional to 78,992.06, 109,011.12 and 47,179.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,992.06 : 109,011.12 = 47,179.30 : x
2. Step 2: Convert to fraction form
   78,992.06/109,011.12 = 47,179.30/x
3. Step 3: Cross multiply
   78,992.06x = 109,011.12 × 47,179.30
4. Step 4: Simplify right side
   78,992.06x = 5,143,068,333.82
5. Step 5: Solve for x
   x = 5,143,068,333.82/78,992.06
6. Step 6: Final answer
   x = 65,108.67