Finding the Fourth Proportional to 99,697.47, 149,485.98 and 39,735.18

Step by Step Solution

1. Step 1: Write the proportion equation
   99,697.47 : 149,485.98 = 39,735.18 : x
2. Step 2: Convert to fraction form
   99,697.47/149,485.98 = 39,735.18/x
3. Step 3: Cross multiply
   99,697.47x = 149,485.98 × 39,735.18
4. Step 4: Simplify right side
   99,697.47x = 5,939,852,322.78
5. Step 5: Solve for x
   x = 5,939,852,322.78/99,697.47
6. Step 6: Final answer
   x = 59,578.77