Finding the Fourth Proportional to 93,096.79, 128,453.98 and 60,878.64

Step by Step Solution

1. Step 1: Write the proportion equation
   93,096.79 : 128,453.98 = 60,878.64 : x
2. Step 2: Convert to fraction form
   93,096.79/128,453.98 = 60,878.64/x
3. Step 3: Cross multiply
   93,096.79x = 128,453.98 × 60,878.64
4. Step 4: Simplify right side
   93,096.79x = 7,820,103,154.87
5. Step 5: Solve for x
   x = 7,820,103,154.87/93,096.79
6. Step 6: Final answer
   x = 83,999.70