Finding the Fourth Proportional to 111,860.77, 154,368.38 and 64,116.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111,860.77 : 154,368.38 = 64,116.91 : x
2. Step 2: Convert to fraction form
   111,860.77/154,368.38 = 64,116.91/x
3. Step 3: Cross multiply
   111,860.77x = 154,368.38 × 64,116.91
4. Step 4: Simplify right side
   111,860.77x = 9,897,623,206.72
5. Step 5: Solve for x
   x = 9,897,623,206.72/111,860.77
6. Step 6: Final answer
   x = 88,481.63