Finding the Fourth Proportional to 35,780.55, 49,374.65 and 19,864.05

Step by Step Solution

1. Step 1: Write the proportion equation
   35,780.55 : 49,374.65 = 19,864.05 : x
2. Step 2: Convert to fraction form
   35,780.55/49,374.65 = 19,864.05/x
3. Step 3: Cross multiply
   35,780.55x = 49,374.65 × 19,864.05
4. Step 4: Simplify right side
   35,780.55x = 980,780,417.01
5. Step 5: Solve for x
   x = 980,780,417.01/35,780.55
6. Step 6: Final answer
   x = 27,410.99