Finding the Fourth Proportional to 109,630.20, 164,510.10 and 72,298.20

Step by Step Solution

1. Step 1: Write the proportion equation
   109,630.20 : 164,510.10 = 72,298.20 : x
2. Step 2: Convert to fraction form
   109,630.20/164,510.10 = 72,298.20/x
3. Step 3: Cross multiply
   109,630.20x = 164,510.10 × 72,298.20
4. Step 4: Simplify right side
   109,630.20x = 11,893,784,111.82
5. Step 5: Solve for x
   x = 11,893,784,111.82/109,630.20
6. Step 6: Final answer
   x = 108,490.03