Finding the Fourth Proportional to 109,520.59, 164,282.19 and 42,992.05

Step by Step Solution

1. Step 1: Write the proportion equation
   109,520.59 : 164,282.19 = 42,992.05 : x
2. Step 2: Convert to fraction form
   109,520.59/164,282.19 = 42,992.05/x
3. Step 3: Cross multiply
   109,520.59x = 164,282.19 × 42,992.05
4. Step 4: Simplify right side
   109,520.59x = 7,062,828,126.59
5. Step 5: Solve for x
   x = 7,062,828,126.59/109,520.59
6. Step 6: Final answer
   x = 64,488.59