Finding the Fourth Proportional to 42,066.02, 63,111.20 and 13,602.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,066.02 : 63,111.20 = 13,602.36 : x
2. Step 2: Convert to fraction form
   42,066.02/63,111.20 = 13,602.36/x
3. Step 3: Cross multiply
   42,066.02x = 63,111.20 × 13,602.36
4. Step 4: Simplify right side
   42,066.02x = 858,461,194.42
5. Step 5: Solve for x
   x = 858,461,194.42/42,066.02
6. Step 6: Final answer
   x = 20,407.48