Finding the Fourth Proportional to 99,933.46, 137,894.89 and 64,171.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,933.46 : 137,894.89 = 64,171.92 : x
2. Step 2: Convert to fraction form
   99,933.46/137,894.89 = 64,171.92/x
3. Step 3: Cross multiply
   99,933.46x = 137,894.89 × 64,171.92
4. Step 4: Simplify right side
   99,933.46x = 8,848,979,849.49
5. Step 5: Solve for x
   x = 8,848,979,849.49/99,933.46
6. Step 6: Final answer
   x = 88,548.72