Finding the Fourth Proportional to 56,925.42, 78,561.39 and 31,436.64

Step by Step Solution

1. Step 1: Write the proportion equation
   56,925.42 : 78,561.39 = 31,436.64 : x
2. Step 2: Convert to fraction form
   56,925.42/78,561.39 = 31,436.64/x
3. Step 3: Cross multiply
   56,925.42x = 78,561.39 × 31,436.64
4. Step 4: Simplify right side
   56,925.42x = 2,469,706,135.33
5. Step 5: Solve for x
   x = 2,469,706,135.33/56,925.42
6. Step 6: Final answer
   x = 43,384.94