Finding the Fourth Proportional to 93,084.04, 128,477.46 and 55,379.80

Step by Step Solution

1. Step 1: Write the proportion equation
   93,084.04 : 128,477.46 = 55,379.80 : x
2. Step 2: Convert to fraction form
   93,084.04/128,477.46 = 55,379.80/x
3. Step 3: Cross multiply
   93,084.04x = 128,477.46 × 55,379.80
4. Step 4: Simplify right side
   93,084.04x = 7,115,056,039.31
5. Step 5: Solve for x
   x = 7,115,056,039.31/93,084.04
6. Step 6: Final answer
   x = 76,436.91