Finding the Fourth Proportional to 116,890.08, 161,300.20 and 65,904.63

Step by Step Solution

1. Step 1: Write the proportion equation
   116,890.08 : 161,300.20 = 65,904.63 : x
2. Step 2: Convert to fraction form
   116,890.08/161,300.20 = 65,904.63/x
3. Step 3: Cross multiply
   116,890.08x = 161,300.20 × 65,904.63
4. Step 4: Simplify right side
   116,890.08x = 10,630,429,999.93
5. Step 5: Solve for x
   x = 10,630,429,999.93/116,890.08
6. Step 6: Final answer
   x = 90,943.82