Finding the Fourth Proportional to 42,482.19, 63,744.69 and 30,081.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,482.19 : 63,744.69 = 30,081.90 : x
2. Step 2: Convert to fraction form
   42,482.19/63,744.69 = 30,081.90/x
3. Step 3: Cross multiply
   42,482.19x = 63,744.69 × 30,081.90
4. Step 4: Simplify right side
   42,482.19x = 1,917,561,390.11
5. Step 5: Solve for x
   x = 1,917,561,390.11/42,482.19
6. Step 6: Final answer
   x = 45,138.01