Finding the Fourth Proportional to 82,721.16, 123,881.85 and 47,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,721.16 : 123,881.85 = 47,074.50 : x
2. Step 2: Convert to fraction form
   82,721.16/123,881.85 = 47,074.50/x
3. Step 3: Cross multiply
   82,721.16x = 123,881.85 × 47,074.50
4. Step 4: Simplify right side
   82,721.16x = 5,831,676,147.83
5. Step 5: Solve for x
   x = 5,831,676,147.83/82,721.16
6. Step 6: Final answer
   x = 70,498.00