Finding the Fourth Proportional to 99,144.56, 148,724.64 and 28,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   99,144.56 : 148,724.64 = 28,066.05 : x
2. Step 2: Convert to fraction form
   99,144.56/148,724.64 = 28,066.05/x
3. Step 3: Cross multiply
   99,144.56x = 148,724.64 × 28,066.05
4. Step 4: Simplify right side
   99,144.56x = 4,174,113,182.47
5. Step 5: Solve for x
   x = 4,174,113,182.47/99,144.56
6. Step 6: Final answer
   x = 42,101.28