Finding the Fourth Proportional to 61,978.86, 85,530.78 and 33,684.56

Step by Step Solution

1. Step 1: Write the proportion equation
   61,978.86 : 85,530.78 = 33,684.56 : x
2. Step 2: Convert to fraction form
   61,978.86/85,530.78 = 33,684.56/x
3. Step 3: Cross multiply
   61,978.86x = 85,530.78 × 33,684.56
4. Step 4: Simplify right side
   61,978.86x = 2,881,066,690.76
5. Step 5: Solve for x
   x = 2,881,066,690.76/61,978.86
6. Step 6: Final answer
   x = 46,484.67