Finding the Fourth Proportional to 109,508.07, 164,263.42 and 42,979.53

Step by Step Solution

1. Step 1: Write the proportion equation
   109,508.07 : 164,263.42 = 42,979.53 : x
2. Step 2: Convert to fraction form
   109,508.07/164,263.42 = 42,979.53/x
3. Step 3: Cross multiply
   109,508.07x = 164,263.42 × 42,979.53
4. Step 4: Simplify right side
   109,508.07x = 7,059,964,587.79
5. Step 5: Solve for x
   x = 7,059,964,587.79/109,508.07
6. Step 6: Final answer
   x = 64,469.81