Finding the Fourth Proportional to 93,390.50, 128,878.89 and 59,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   93,390.50 : 128,878.89 = 59,856.50 : x
2. Step 2: Convert to fraction form
   93,390.50/128,878.89 = 59,856.50/x
3. Step 3: Cross multiply
   93,390.50x = 128,878.89 × 59,856.50
4. Step 4: Simplify right side
   93,390.50x = 7,714,239,279.29
5. Step 5: Solve for x
   x = 7,714,239,279.29/93,390.50
6. Step 6: Final answer
   x = 82,601.97