Finding the Fourth Proportional to 72,478, 100,019.82 and 42,284.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,478 : 100,019.82 = 42,284.08 : x
2. Step 2: Convert to fraction form
   72,478/100,019.82 = 42,284.08/x
3. Step 3: Cross multiply
   72,478x = 100,019.82 × 42,284.08
4. Step 4: Simplify right side
   72,478x = 4,229,246,070.47
5. Step 5: Solve for x
   x = 4,229,246,070.47/72,478
6. Step 6: Final answer
   x = 58,352.14