Finding the Fourth Proportional to 61,152.83, 84,312.78 and 39,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,152.83 : 84,312.78 = 39,604.50 : x
2. Step 2: Convert to fraction form
   61,152.83/84,312.78 = 39,604.50/x
3. Step 3: Cross multiply
   61,152.83x = 84,312.78 × 39,604.50
4. Step 4: Simplify right side
   61,152.83x = 3,339,165,185.72
5. Step 5: Solve for x
   x = 3,339,165,185.72/61,152.83
6. Step 6: Final answer
   x = 54,603.61