Finding the Fourth Proportional to 93,155.83, 128,571.89 and 54,913.18

Step by Step Solution

1. Step 1: Write the proportion equation
   93,155.83 : 128,571.89 = 54,913.18 : x
2. Step 2: Convert to fraction form
   93,155.83/128,571.89 = 54,913.18/x
3. Step 3: Cross multiply
   93,155.83x = 128,571.89 × 54,913.18
4. Step 4: Simplify right side
   93,155.83x = 7,060,291,338.51
5. Step 5: Solve for x
   x = 7,060,291,338.51/93,155.83
6. Step 6: Final answer
   x = 75,790.12