Finding the Fourth Proportional to 99,810.88, 149,723.69 and 28,730.65

Step by Step Solution

1. Step 1: Write the proportion equation
   99,810.88 : 149,723.69 = 28,730.65 : x
2. Step 2: Convert to fraction form
   99,810.88/149,723.69 = 28,730.65/x
3. Step 3: Cross multiply
   99,810.88x = 149,723.69 × 28,730.65
4. Step 4: Simplify right side
   99,810.88x = 4,301,658,858.48
5. Step 5: Solve for x
   x = 4,301,658,858.48/99,810.88
6. Step 6: Final answer
   x = 43,098.09