Finding the Fourth Proportional to 55,966.72, 83,823.12 and 43,385.92

Step by Step Solution

1. Step 1: Write the proportion equation
   55,966.72 : 83,823.12 = 43,385.92 : x
2. Step 2: Convert to fraction form
   55,966.72/83,823.12 = 43,385.92/x
3. Step 3: Cross multiply
   55,966.72x = 83,823.12 × 43,385.92
4. Step 4: Simplify right side
   55,966.72x = 3,636,743,178.47
5. Step 5: Solve for x
   x = 3,636,743,178.47/55,966.72
6. Step 6: Final answer
   x = 64,980.46