Finding the Fourth Proportional to 55,403.84, 83,044.20 and 42,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,403.84 : 83,044.20 = 42,212.72 : x
2. Step 2: Convert to fraction form
   55,403.84/83,044.20 = 42,212.72/x
3. Step 3: Cross multiply
   55,403.84x = 83,044.20 × 42,212.72
4. Step 4: Simplify right side
   55,403.84x = 3,505,521,562.22
5. Step 5: Solve for x
   x = 3,505,521,562.22/55,403.84
6. Step 6: Final answer
   x = 63,272.18