Finding the Fourth Proportional to 56,472, 77,931.72 and 31,321.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,472 : 77,931.72 = 31,321.56 : x
2. Step 2: Convert to fraction form
   56,472/77,931.72 = 31,321.56/x
3. Step 3: Cross multiply
   56,472x = 77,931.72 × 31,321.56
4. Step 4: Simplify right side
   56,472x = 2,440,943,043.88
5. Step 5: Solve for x
   x = 2,440,943,043.88/56,472
6. Step 6: Final answer
   x = 43,223.95