Finding the Fourth Proportional to 85,131.15, 117,486.30 and 46,890.69

Step by Step Solution

1. Step 1: Write the proportion equation
   85,131.15 : 117,486.30 = 46,890.69 : x
2. Step 2: Convert to fraction form
   85,131.15/117,486.30 = 46,890.69/x
3. Step 3: Cross multiply
   85,131.15x = 117,486.30 × 46,890.69
4. Step 4: Simplify right side
   85,131.15x = 5,509,013,672.55
5. Step 5: Solve for x
   x = 5,509,013,672.55/85,131.15
6. Step 6: Final answer
   x = 64,712.08