Finding the Fourth Proportional to 85,139.16, 117,490.98 and 46,897.92

Step by Step Solution

1. Step 1: Write the proportion equation
   85,139.16 : 117,490.98 = 46,897.92 : x
2. Step 2: Convert to fraction form
   85,139.16/117,490.98 = 46,897.92/x
3. Step 3: Cross multiply
   85,139.16x = 117,490.98 × 46,897.92
4. Step 4: Simplify right side
   85,139.16x = 5,510,082,580.76
5. Step 5: Solve for x
   x = 5,510,082,580.76/85,139.16
6. Step 6: Final answer
   x = 64,718.55