Finding the Fourth Proportional to 42,153, 63,139.56 and 27,317.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153 : 63,139.56 = 27,317.88 : x
2. Step 2: Convert to fraction form
   42,153/63,139.56 = 27,317.88/x
3. Step 3: Cross multiply
   42,153x = 63,139.56 × 27,317.88
4. Step 4: Simplify right side
   42,153x = 1,724,838,923.33
5. Step 5: Solve for x
   x = 1,724,838,923.33/42,153
6. Step 6: Final answer
   x = 40,918.53