Finding the Fourth Proportional to 93,308.42, 128,752.63 and 55,069.57

Step by Step Solution

1. Step 1: Write the proportion equation
   93,308.42 : 128,752.63 = 55,069.57 : x
2. Step 2: Convert to fraction form
   93,308.42/128,752.63 = 55,069.57/x
3. Step 3: Cross multiply
   93,308.42x = 128,752.63 × 55,069.57
4. Step 4: Simplify right side
   93,308.42x = 7,090,351,970.47
5. Step 5: Solve for x
   x = 7,090,351,970.47/93,308.42
6. Step 6: Final answer
   x = 75,988.34