Finding the Fourth Proportional to 111,663.50, 154,095.63 and 61,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,663.50 : 154,095.63 = 61,362.50 : x
2. Step 2: Convert to fraction form
   111,663.50/154,095.63 = 61,362.50/x
3. Step 3: Cross multiply
   111,663.50x = 154,095.63 × 61,362.50
4. Step 4: Simplify right side
   111,663.50x = 9,455,693,095.88
5. Step 5: Solve for x
   x = 9,455,693,095.88/111,663.50
6. Step 6: Final answer
   x = 84,680.25