Finding the Fourth Proportional to 93,360.32, 128,814.18 and 55,120.76

Step by Step Solution

1. Step 1: Write the proportion equation
   93,360.32 : 128,814.18 = 55,120.76 : x
2. Step 2: Convert to fraction form
   93,360.32/128,814.18 = 55,120.76/x
3. Step 3: Cross multiply
   93,360.32x = 128,814.18 × 55,120.76
4. Step 4: Simplify right side
   93,360.32x = 7,100,334,856.31
5. Step 5: Solve for x
   x = 7,100,334,856.31/93,360.32
6. Step 6: Final answer
   x = 76,053.03