Finding the Fourth Proportional to 111,870.07, 154,387.58 and 64,130.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111,870.07 : 154,387.58 = 64,130.59 : x
2. Step 2: Convert to fraction form
   111,870.07/154,387.58 = 64,130.59/x
3. Step 3: Cross multiply
   111,870.07x = 154,387.58 × 64,130.59
4. Step 4: Simplify right side
   111,870.07x = 9,900,966,594.07
5. Step 5: Solve for x
   x = 9,900,966,594.07/111,870.07
6. Step 6: Final answer
   x = 88,504.16