Finding the Fourth Proportional to 163,111.42, 225,106.02 and 90,528.00

Step by Step Solution

1. Step 1: Write the proportion equation
   163,111.42 : 225,106.02 = 90,528.00 : x
2. Step 2: Convert to fraction form
   163,111.42/225,106.02 = 90,528.00/x
3. Step 3: Cross multiply
   163,111.42x = 225,106.02 × 90,528.00
4. Step 4: Simplify right side
   163,111.42x = 20,378,396,934.41
5. Step 5: Solve for x
   x = 20,378,396,934.41/163,111.42
6. Step 6: Final answer
   x = 124,935.44