Finding the Fourth Proportional to 93,222.65, 128,656.55 and 56,922.10

Step by Step Solution

1. Step 1: Write the proportion equation
   93,222.65 : 128,656.55 = 56,922.10 : x
2. Step 2: Convert to fraction form
   93,222.65/128,656.55 = 56,922.10/x
3. Step 3: Cross multiply
   93,222.65x = 128,656.55 × 56,922.10
4. Step 4: Simplify right side
   93,222.65x = 7,323,400,825.42
5. Step 5: Solve for x
   x = 7,323,400,825.42/93,222.65
6. Step 6: Final answer
   x = 78,558.17