Finding the Fourth Proportional to 118,928.69, 164,207.69 and 76,561.02

Step by Step Solution

1. Step 1: Write the proportion equation
   118,928.69 : 164,207.69 = 76,561.02 : x
2. Step 2: Convert to fraction form
   118,928.69/164,207.69 = 76,561.02/x
3. Step 3: Cross multiply
   118,928.69x = 164,207.69 × 76,561.02
4. Step 4: Simplify right side
   118,928.69x = 12,571,908,238.24
5. Step 5: Solve for x
   x = 12,571,908,238.24/118,928.69
6. Step 6: Final answer
   x = 105,709.63