Finding the Fourth Proportional to 42,482, 63,730.29 and 12,902.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,482 : 63,730.29 = 12,902.83 : x
2. Step 2: Convert to fraction form
   42,482/63,730.29 = 12,902.83/x
3. Step 3: Cross multiply
   42,482x = 63,730.29 × 12,902.83
4. Step 4: Simplify right side
   42,482x = 822,301,097.72
5. Step 5: Solve for x
   x = 822,301,097.72/42,482
6. Step 6: Final answer
   x = 19,356.46