Finding the Fourth Proportional to 52,362.02, 78,542.76 and 21,197

Step by Step Solution

1. Step 1: Write the proportion equation
   52,362.02 : 78,542.76 = 21,197 : x
2. Step 2: Convert to fraction form
   52,362.02/78,542.76 = 21,197/x
3. Step 3: Cross multiply
   52,362.02x = 78,542.76 × 21,197
4. Step 4: Simplify right side
   52,362.02x = 1,664,870,883.72
5. Step 5: Solve for x
   x = 1,664,870,883.72/52,362.02
6. Step 6: Final answer
   x = 31,795.39