Finding the Fourth Proportional to 111,200.30, 153,303.88 and 70,344.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,200.30 : 153,303.88 = 70,344.10 : x
2. Step 2: Convert to fraction form
   111,200.30/153,303.88 = 70,344.10/x
3. Step 3: Cross multiply
   111,200.30x = 153,303.88 × 70,344.10
4. Step 4: Simplify right side
   111,200.30x = 10,784,023,465.11
5. Step 5: Solve for x
   x = 10,784,023,465.11/111,200.30
6. Step 6: Final answer
   x = 96,978.37