Finding the Fourth Proportional to 56,732.05, 78,289.59 and 31,237.89

Step by Step Solution

1. Step 1: Write the proportion equation
   56,732.05 : 78,289.59 = 31,237.89 : x
2. Step 2: Convert to fraction form
   56,732.05/78,289.59 = 31,237.89/x
3. Step 3: Cross multiply
   56,732.05x = 78,289.59 × 31,237.89
4. Step 4: Simplify right side
   56,732.05x = 2,445,601,404.84
5. Step 5: Solve for x
   x = 2,445,601,404.84/56,732.05
6. Step 6: Final answer
   x = 43,107.93