Finding the Fourth Proportional to 61,978.91, 85,531.56 and 33,684.61

Step by Step Solution

1. Step 1: Write the proportion equation
   61,978.91 : 85,531.56 = 33,684.61 : x
2. Step 2: Convert to fraction form
   61,978.91/85,531.56 = 33,684.61/x
3. Step 3: Cross multiply
   61,978.91x = 85,531.56 × 33,684.61
4. Step 4: Simplify right side
   61,978.91x = 2,881,097,241.29
5. Step 5: Solve for x
   x = 2,881,097,241.29/61,978.91
6. Step 6: Final answer
   x = 46,485.12