Finding the Fourth Proportional to 93,406.50, 128,901 and 59,872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   93,406.50 : 128,901 = 59,872.50 : x
2. Step 2: Convert to fraction form
   93,406.50/128,901 = 59,872.50/x
3. Step 3: Cross multiply
   93,406.50x = 128,901 × 59,872.50
4. Step 4: Simplify right side
   93,406.50x = 7,717,625,122.50
5. Step 5: Solve for x
   x = 7,717,625,122.50/93,406.50
6. Step 6: Final answer
   x = 82,624.07