Finding the Fourth Proportional to 35,894.74, 49,528.83 and 19,978.78

Step by Step Solution

1. Step 1: Write the proportion equation
   35,894.74 : 49,528.83 = 19,978.78 : x
2. Step 2: Convert to fraction form
   35,894.74/49,528.83 = 19,978.78/x
3. Step 3: Cross multiply
   35,894.74x = 49,528.83 × 19,978.78
4. Step 4: Simplify right side
   35,894.74x = 989,525,598.23
5. Step 5: Solve for x
   x = 989,525,598.23/35,894.74
6. Step 6: Final answer
   x = 27,567.43