Finding the Fourth Proportional to 61,978.71, 85,530.15 and 33,684.60

Step by Step Solution

1. Step 1: Write the proportion equation
   61,978.71 : 85,530.15 = 33,684.60 : x
2. Step 2: Convert to fraction form
   61,978.71/85,530.15 = 33,684.60/x
3. Step 3: Cross multiply
   61,978.71x = 85,530.15 × 33,684.60
4. Step 4: Simplify right side
   61,978.71x = 2,881,048,890.69
5. Step 5: Solve for x
   x = 2,881,048,890.69/61,978.71
6. Step 6: Final answer
   x = 46,484.49