Finding the Fourth Proportional to 99,339.48, 148,073.38 and 91,367.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,339.48 : 148,073.38 = 91,367.88 : x
2. Step 2: Convert to fraction form
   99,339.48/148,073.38 = 91,367.88/x
3. Step 3: Cross multiply
   99,339.48x = 148,073.38 × 91,367.88
4. Step 4: Simplify right side
   99,339.48x = 13,529,150,815.03
5. Step 5: Solve for x
   x = 13,529,150,815.03/99,339.48
6. Step 6: Final answer
   x = 136,191.08