Finding the Fourth Proportional to 55,581.89, 83,417.79 and 43,072.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,581.89 : 83,417.79 = 43,072.25 : x
2. Step 2: Convert to fraction form
   55,581.89/83,417.79 = 43,072.25/x
3. Step 3: Cross multiply
   55,581.89x = 83,417.79 × 43,072.25
4. Step 4: Simplify right side
   55,581.89x = 3,592,991,905.33
5. Step 5: Solve for x
   x = 3,592,991,905.33/55,581.89
6. Step 6: Final answer
   x = 64,643.21