Finding the Fourth Proportional to 40,377.84, 55,663.67 and 28,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   40,377.84 : 55,663.67 = 28,404.01 : x
2. Step 2: Convert to fraction form
   40,377.84/55,663.67 = 28,404.01/x
3. Step 3: Cross multiply
   40,377.84x = 55,663.67 × 28,404.01
4. Step 4: Simplify right side
   40,377.84x = 1,581,071,579.91
5. Step 5: Solve for x
   x = 1,581,071,579.91/40,377.84
6. Step 6: Final answer
   x = 39,156.92