Finding the Fourth Proportional to 43,188.89, 64,700.72 and 38,134.49

Step by Step Solution

1. Step 1: Write the proportion equation
   43,188.89 : 64,700.72 = 38,134.49 : x
2. Step 2: Convert to fraction form
   43,188.89/64,700.72 = 38,134.49/x
3. Step 3: Cross multiply
   43,188.89x = 64,700.72 × 38,134.49
4. Step 4: Simplify right side
   43,188.89x = 2,467,328,769.16
5. Step 5: Solve for x
   x = 2,467,328,769.16/43,188.89
6. Step 6: Final answer
   x = 57,128.78