Finding the Fourth Proportional to 80,504.74, 120,820.89 and 42,580.93

Step by Step Solution

1. Step 1: Write the proportion equation
   80,504.74 : 120,820.89 = 42,580.93 : x
2. Step 2: Convert to fraction form
   80,504.74/120,820.89 = 42,580.93/x
3. Step 3: Cross multiply
   80,504.74x = 120,820.89 × 42,580.93
4. Step 4: Simplify right side
   80,504.74x = 5,144,665,859.63
5. Step 5: Solve for x
   x = 5,144,665,859.63/80,504.74
6. Step 6: Final answer
   x = 63,905.13