Finding the Fourth Proportional to 42,607.55, 63,840.69 and 25,917.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,607.55 : 63,840.69 = 25,917.09 : x
2. Step 2: Convert to fraction form
   42,607.55/63,840.69 = 25,917.09/x
3. Step 3: Cross multiply
   42,607.55x = 63,840.69 × 25,917.09
4. Step 4: Simplify right side
   42,607.55x = 1,654,564,908.39
5. Step 5: Solve for x
   x = 1,654,564,908.39/42,607.55
6. Step 6: Final answer
   x = 38,832.67