Finding the Fourth Proportional to 61,985, 85,528.72 and 35,121.96

Step by Step Solution

1. Step 1: Write the proportion equation
   61,985 : 85,528.72 = 35,121.96 : x
2. Step 2: Convert to fraction form
   61,985/85,528.72 = 35,121.96/x
3. Step 3: Cross multiply
   61,985x = 85,528.72 × 35,121.96
4. Step 4: Simplify right side
   61,985x = 3,003,936,282.69
5. Step 5: Solve for x
   x = 3,003,936,282.69/61,985
6. Step 6: Final answer
   x = 48,462.31