Finding the Fourth Proportional to 111,732.51, 154,181.74 and 65,784.90

Step by Step Solution

1. Step 1: Write the proportion equation
   111,732.51 : 154,181.74 = 65,784.90 : x
2. Step 2: Convert to fraction form
   111,732.51/154,181.74 = 65,784.90/x
3. Step 3: Cross multiply
   111,732.51x = 154,181.74 × 65,784.90
4. Step 4: Simplify right side
   111,732.51x = 10,142,830,347.73
5. Step 5: Solve for x
   x = 10,142,830,347.73/111,732.51
6. Step 6: Final answer
   x = 90,777.79