Finding the Fourth Proportional to 56,908.54, 78,538.14 and 31,419.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,908.54 : 78,538.14 = 31,419.82 : x
2. Step 2: Convert to fraction form
   56,908.54/78,538.14 = 31,419.82/x
3. Step 3: Cross multiply
   56,908.54x = 78,538.14 × 31,419.82
4. Step 4: Simplify right side
   56,908.54x = 2,467,654,221.93
5. Step 5: Solve for x
   x = 2,467,654,221.93/56,908.54
6. Step 6: Final answer
   x = 43,361.76