Finding the Fourth Proportional to 99,644.56, 149,475.42 and 28,567.48

Step by Step Solution

1. Step 1: Write the proportion equation
   99,644.56 : 149,475.42 = 28,567.48 : x
2. Step 2: Convert to fraction form
   99,644.56/149,475.42 = 28,567.48/x
3. Step 3: Cross multiply
   99,644.56x = 149,475.42 × 28,567.48
4. Step 4: Simplify right side
   99,644.56x = 4,270,136,071.34
5. Step 5: Solve for x
   x = 4,270,136,071.34/99,644.56
6. Step 6: Final answer
   x = 42,853.68