Finding the Fourth Proportional to 99,499.89, 149,226.84 and 28,421.04

Step by Step Solution

1. Step 1: Write the proportion equation
   99,499.89 : 149,226.84 = 28,421.04 : x
2. Step 2: Convert to fraction form
   99,499.89/149,226.84 = 28,421.04/x
3. Step 3: Cross multiply
   99,499.89x = 149,226.84 × 28,421.04
4. Step 4: Simplify right side
   99,499.89x = 4,241,181,988.71
5. Step 5: Solve for x
   x = 4,241,181,988.71/99,499.89
6. Step 6: Final answer
   x = 42,624.99