Finding the Fourth Proportional to 66,109.82, 99,080.49 and 30,972.02

Step by Step Solution

1. Step 1: Write the proportion equation
   66,109.82 : 99,080.49 = 30,972.02 : x
2. Step 2: Convert to fraction form
   66,109.82/99,080.49 = 30,972.02/x
3. Step 3: Cross multiply
   66,109.82x = 99,080.49 × 30,972.02
4. Step 4: Simplify right side
   66,109.82x = 3,068,722,917.89
5. Step 5: Solve for x
   x = 3,068,722,917.89/66,109.82
6. Step 6: Final answer
   x = 46,418.56