Finding the Fourth Proportional to 69,776.91, 104,665.41 and 30,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,776.91 : 104,665.41 = 30,312.50 : x
2. Step 2: Convert to fraction form
   69,776.91/104,665.41 = 30,312.50/x
3. Step 3: Cross multiply
   69,776.91x = 104,665.41 × 30,312.50
4. Step 4: Simplify right side
   69,776.91x = 3,172,669,717.30
5. Step 5: Solve for x
   x = 3,172,669,717.30/69,776.91
6. Step 6: Final answer
   x = 45,468.76