Finding the Fourth Proportional to 99,577.49, 149,306.96 and 39,573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,577.49 : 149,306.96 = 39,573.50 : x
2. Step 2: Convert to fraction form
   99,577.49/149,306.96 = 39,573.50/x
3. Step 3: Cross multiply
   99,577.49x = 149,306.96 × 39,573.50
4. Step 4: Simplify right side
   99,577.49x = 5,908,598,333.96
5. Step 5: Solve for x
   x = 5,908,598,333.96/99,577.49
6. Step 6: Final answer
   x = 59,336.69