Finding the Fourth Proportional to 111,784.77, 154,284.90 and 64,070.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,784.77 : 154,284.90 = 64,070.10 : x
2. Step 2: Convert to fraction form
   111,784.77/154,284.90 = 64,070.10/x
3. Step 3: Cross multiply
   111,784.77x = 154,284.90 × 64,070.10
4. Step 4: Simplify right side
   111,784.77x = 9,885,048,971.49
5. Step 5: Solve for x
   x = 9,885,048,971.49/111,784.77
6. Step 6: Final answer
   x = 88,429.30