Finding the Fourth Proportional to 61,144.72, 84,384.72 and 35,999.20

Step by Step Solution

1. Step 1: Write the proportion equation
   61,144.72 : 84,384.72 = 35,999.20 : x
2. Step 2: Convert to fraction form
   61,144.72/84,384.72 = 35,999.20/x
3. Step 3: Cross multiply
   61,144.72x = 84,384.72 × 35,999.20
4. Step 4: Simplify right side
   61,144.72x = 3,037,782,412.22
5. Step 5: Solve for x
   x = 3,037,782,412.22/61,144.72
6. Step 6: Final answer
   x = 49,681.84