Finding the Fourth Proportional to 65,178.56, 89,908.83 and 38,316.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,178.56 : 89,908.83 = 38,316.12 : x
2. Step 2: Convert to fraction form
   65,178.56/89,908.83 = 38,316.12/x
3. Step 3: Cross multiply
   65,178.56x = 89,908.83 × 38,316.12
4. Step 4: Simplify right side
   65,178.56x = 3,444,957,519.34
5. Step 5: Solve for x
   x = 3,444,957,519.34/65,178.56
6. Step 6: Final answer
   x = 52,854.16