Finding the Fourth Proportional to 91,311.69, 136,957.78 and 43,268.70

Step by Step Solution

1. Step 1: Write the proportion equation
   91,311.69 : 136,957.78 = 43,268.70 : x
2. Step 2: Convert to fraction form
   91,311.69/136,957.78 = 43,268.70/x
3. Step 3: Cross multiply
   91,311.69x = 136,957.78 × 43,268.70
4. Step 4: Simplify right side
   91,311.69x = 5,925,985,095.49
5. Step 5: Solve for x
   x = 5,925,985,095.49/91,311.69
6. Step 6: Final answer
   x = 64,898.43