Finding the Fourth Proportional to 112,328.72, 155,086.44 and 69,904.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,328.72 : 155,086.44 = 69,904.40 : x
2. Step 2: Convert to fraction form
   112,328.72/155,086.44 = 69,904.40/x
3. Step 3: Cross multiply
   112,328.72x = 155,086.44 × 69,904.40
4. Step 4: Simplify right side
   112,328.72x = 10,841,224,536.34
5. Step 5: Solve for x
   x = 10,841,224,536.34/112,328.72
6. Step 6: Final answer
   x = 96,513.38