Finding the Fourth Proportional to 91,962.48, 137,933.92 and 56,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,962.48 : 137,933.92 = 56,892.72 : x
2. Step 2: Convert to fraction form
   91,962.48/137,933.92 = 56,892.72/x
3. Step 3: Cross multiply
   91,962.48x = 137,933.92 × 56,892.72
4. Step 4: Simplify right side
   91,962.48x = 7,847,435,889.06
5. Step 5: Solve for x
   x = 7,847,435,889.06/91,962.48
6. Step 6: Final answer
   x = 85,333.02