Finding the Fourth Proportional to 116,557.20, 160,848.70 and 65,569.98

Step by Step Solution

1. Step 1: Write the proportion equation
   116,557.20 : 160,848.70 = 65,569.98 : x
2. Step 2: Convert to fraction form
   116,557.20/160,848.70 = 65,569.98/x
3. Step 3: Cross multiply
   116,557.20x = 160,848.70 × 65,569.98
4. Step 4: Simplify right side
   116,557.20x = 10,546,846,042.03
5. Step 5: Solve for x
   x = 10,546,846,042.03/116,557.20
6. Step 6: Final answer
   x = 90,486.44