Finding the Fourth Proportional to 42,763.24, 64,151.82 and 13,181.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.24 : 64,151.82 = 13,181.08 : x
2. Step 2: Convert to fraction form
   42,763.24/64,151.82 = 13,181.08/x
3. Step 3: Cross multiply
   42,763.24x = 64,151.82 × 13,181.08
4. Step 4: Simplify right side
   42,763.24x = 845,590,271.57
5. Step 5: Solve for x
   x = 845,590,271.57/42,763.24
6. Step 6: Final answer
   x = 19,773.77