Finding the Fourth Proportional to 56,634.30, 78,148.50 and 31,136.46

Step by Step Solution

1. Step 1: Write the proportion equation
   56,634.30 : 78,148.50 = 31,136.46 : x
2. Step 2: Convert to fraction form
   56,634.30/78,148.50 = 31,136.46/x
3. Step 3: Cross multiply
   56,634.30x = 78,148.50 × 31,136.46
4. Step 4: Simplify right side
   56,634.30x = 2,433,267,644.31
5. Step 5: Solve for x
   x = 2,433,267,644.31/56,634.30
6. Step 6: Final answer
   x = 42,964.56