Finding the Fourth Proportional to 93,081.35, 128,453.14 and 55,348.31

Step by Step Solution

1. Step 1: Write the proportion equation
   93,081.35 : 128,453.14 = 55,348.31 : x
2. Step 2: Convert to fraction form
   93,081.35/128,453.14 = 55,348.31/x
3. Step 3: Cross multiply
   93,081.35x = 128,453.14 × 55,348.31
4. Step 4: Simplify right side
   93,081.35x = 7,109,664,603.51
5. Step 5: Solve for x
   x = 7,109,664,603.51/93,081.35
6. Step 6: Final answer
   x = 76,381.19