Finding the Fourth Proportional to 109,394.48, 164,026.05 and 42,755.21

Step by Step Solution

1. Step 1: Write the proportion equation
   109,394.48 : 164,026.05 = 42,755.21 : x
2. Step 2: Convert to fraction form
   109,394.48/164,026.05 = 42,755.21/x
3. Step 3: Cross multiply
   109,394.48x = 164,026.05 × 42,755.21
4. Step 4: Simplify right side
   109,394.48x = 7,012,967,847.86
5. Step 5: Solve for x
   x = 7,012,967,847.86/109,394.48
6. Step 6: Final answer
   x = 64,107.14