Finding the Fourth Proportional to 42,886.01, 64,325.92 and 13,303.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,886.01 : 64,325.92 = 13,303.08 : x
2. Step 2: Convert to fraction form
   42,886.01/64,325.92 = 13,303.08/x
3. Step 3: Cross multiply
   42,886.01x = 64,325.92 × 13,303.08
4. Step 4: Simplify right side
   42,886.01x = 855,732,859.83
5. Step 5: Solve for x
   x = 855,732,859.83/42,886.01
6. Step 6: Final answer
   x = 19,953.66