Finding the Fourth Proportional to 35,580.84, 49,064.80 and 30,561.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,580.84 : 49,064.80 = 30,561.72 : x
2. Step 2: Convert to fraction form
   35,580.84/49,064.80 = 30,561.72/x
3. Step 3: Cross multiply
   35,580.84x = 49,064.80 × 30,561.72
4. Step 4: Simplify right side
   35,580.84x = 1,499,504,679.46
5. Step 5: Solve for x
   x = 1,499,504,679.46/35,580.84
6. Step 6: Final answer
   x = 42,143.60