Finding the Fourth Proportional to 80,666.16, 121,005 and 21,501.52

Step by Step Solution

1. Step 1: Write the proportion equation
   80,666.16 : 121,005 = 21,501.52 : x
2. Step 2: Convert to fraction form
   80,666.16/121,005 = 21,501.52/x
3. Step 3: Cross multiply
   80,666.16x = 121,005 × 21,501.52
4. Step 4: Simplify right side
   80,666.16x = 2,601,791,427.60
5. Step 5: Solve for x
   x = 2,601,791,427.60/80,666.16
6. Step 6: Final answer
   x = 32,253.82