Finding the Fourth Proportional to 93,307.42, 128,751.25 and 55,068.57

Step by Step Solution

1. Step 1: Write the proportion equation
   93,307.42 : 128,751.25 = 55,068.57 : x
2. Step 2: Convert to fraction form
   93,307.42/128,751.25 = 55,068.57/x
3. Step 3: Cross multiply
   93,307.42x = 128,751.25 × 55,068.57
4. Step 4: Simplify right side
   93,307.42x = 7,090,147,223.21
5. Step 5: Solve for x
   x = 7,090,147,223.21/93,307.42
6. Step 6: Final answer
   x = 75,986.96