Finding the Fourth Proportional to 85,561.30, 118,068.60 and 49,748.77

Step by Step Solution

1. Step 1: Write the proportion equation
   85,561.30 : 118,068.60 = 49,748.77 : x
2. Step 2: Convert to fraction form
   85,561.30/118,068.60 = 49,748.77/x
3. Step 3: Cross multiply
   85,561.30x = 118,068.60 × 49,748.77
4. Step 4: Simplify right side
   85,561.30x = 5,873,767,625.62
5. Step 5: Solve for x
   x = 5,873,767,625.62/85,561.30
6. Step 6: Final answer
   x = 68,649.82