Finding the Fourth Proportional to 42,507.93, 63,709.59 and 18,789.93

Step by Step Solution

1. Step 1: Write the proportion equation
   42,507.93 : 63,709.59 = 18,789.93 : x
2. Step 2: Convert to fraction form
   42,507.93/63,709.59 = 18,789.93/x
3. Step 3: Cross multiply
   42,507.93x = 63,709.59 × 18,789.93
4. Step 4: Simplify right side
   42,507.93x = 1,197,098,736.43
5. Step 5: Solve for x
   x = 1,197,098,736.43/42,507.93
6. Step 6: Final answer
   x = 28,161.77