Finding the Fourth Proportional to 109,458.10, 164,187.15 and 42,876.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,458.10 : 164,187.15 = 42,876.10 : x
2. Step 2: Convert to fraction form
   109,458.10/164,187.15 = 42,876.10/x
3. Step 3: Cross multiply
   109,458.10x = 164,187.15 × 42,876.10
4. Step 4: Simplify right side
   109,458.10x = 7,039,704,662.12
5. Step 5: Solve for x
   x = 7,039,704,662.12/109,458.10
6. Step 6: Final answer
   x = 64,314.15