Finding the Fourth Proportional to 85,587.53, 118,111.02 and 47,861.78

Step by Step Solution

1. Step 1: Write the proportion equation
   85,587.53 : 118,111.02 = 47,861.78 : x
2. Step 2: Convert to fraction form
   85,587.53/118,111.02 = 47,861.78/x
3. Step 3: Cross multiply
   85,587.53x = 118,111.02 × 47,861.78
4. Step 4: Simplify right side
   85,587.53x = 5,653,003,654.82
5. Step 5: Solve for x
   x = 5,653,003,654.82/85,587.53
6. Step 6: Final answer
   x = 66,049.38