Finding the Fourth Proportional to 91,200.48, 136,848.08 and 69,007.24

Step by Step Solution

1. Step 1: Write the proportion equation
   91,200.48 : 136,848.08 = 69,007.24 : x
2. Step 2: Convert to fraction form
   91,200.48/136,848.08 = 69,007.24/x
3. Step 3: Cross multiply
   91,200.48x = 136,848.08 × 69,007.24
4. Step 4: Simplify right side
   91,200.48x = 9,443,508,300.10
5. Step 5: Solve for x
   x = 9,443,508,300.10/91,200.48
6. Step 6: Final answer
   x = 103,546.70