Finding the Fourth Proportional to 109,517.09, 164,276.94 and 42,988.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,517.09 : 164,276.94 = 42,988.55 : x
2. Step 2: Convert to fraction form
   109,517.09/164,276.94 = 42,988.55/x
3. Step 3: Cross multiply
   109,517.09x = 164,276.94 × 42,988.55
4. Step 4: Simplify right side
   109,517.09x = 7,062,027,449.04
5. Step 5: Solve for x
   x = 7,062,027,449.04/109,517.09
6. Step 6: Final answer
   x = 64,483.34