Finding the Fourth Proportional to 91,957.92, 137,838.72 and 52,429.92

Step by Step Solution

1. Step 1: Write the proportion equation
   91,957.92 : 137,838.72 = 52,429.92 : x
2. Step 2: Convert to fraction form
   91,957.92/137,838.72 = 52,429.92/x
3. Step 3: Cross multiply
   91,957.92x = 137,838.72 × 52,429.92
4. Step 4: Simplify right side
   91,957.92x = 7,226,873,062.50
5. Step 5: Solve for x
   x = 7,226,873,062.50/91,957.92
6. Step 6: Final answer
   x = 78,588.91