Finding the Fourth Proportional to 67,780.50, 93,530.39 and 39,102.77

Step by Step Solution

1. Step 1: Write the proportion equation
   67,780.50 : 93,530.39 = 39,102.77 : x
2. Step 2: Convert to fraction form
   67,780.50/93,530.39 = 39,102.77/x
3. Step 3: Cross multiply
   67,780.50x = 93,530.39 × 39,102.77
4. Step 4: Simplify right side
   67,780.50x = 3,657,296,665.01
5. Step 5: Solve for x
   x = 3,657,296,665.01/67,780.50
6. Step 6: Final answer
   x = 53,957.95