Finding the Fourth Proportional to 108,697.72, 149,933.82 and 78,527.38

Step by Step Solution

1. Step 1: Write the proportion equation
   108,697.72 : 149,933.82 = 78,527.38 : x
2. Step 2: Convert to fraction form
   108,697.72/149,933.82 = 78,527.38/x
3. Step 3: Cross multiply
   108,697.72x = 149,933.82 × 78,527.38
4. Step 4: Simplify right side
   108,697.72x = 11,773,910,057.99
5. Step 5: Solve for x
   x = 11,773,910,057.99/108,697.72
6. Step 6: Final answer
   x = 108,317.91