Finding the Fourth Proportional to 56,271, 77,653.98 and 31,122.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,271 : 77,653.98 = 31,122.12 : x
2. Step 2: Convert to fraction form
   56,271/77,653.98 = 31,122.12/x
3. Step 3: Cross multiply
   56,271x = 77,653.98 × 31,122.12
4. Step 4: Simplify right side
   56,271x = 2,416,756,484.04
5. Step 5: Solve for x
   x = 2,416,756,484.04/56,271
6. Step 6: Final answer
   x = 42,948.53