Finding the Fourth Proportional to 109,422.78, 164,148.50 and 42,854.26

Step by Step Solution

1. Step 1: Write the proportion equation
   109,422.78 : 164,148.50 = 42,854.26 : x
2. Step 2: Convert to fraction form
   109,422.78/164,148.50 = 42,854.26/x
3. Step 3: Cross multiply
   109,422.78x = 164,148.50 × 42,854.26
4. Step 4: Simplify right side
   109,422.78x = 7,034,462,497.61
5. Step 5: Solve for x
   x = 7,034,462,497.61/109,422.78
6. Step 6: Final answer
   x = 64,287.00