Finding the Fourth Proportional to 93,429.51, 128,893.46 and 65,151.60

Step by Step Solution

1. Step 1: Write the proportion equation
   93,429.51 : 128,893.46 = 65,151.60 : x
2. Step 2: Convert to fraction form
   93,429.51/128,893.46 = 65,151.60/x
3. Step 3: Cross multiply
   93,429.51x = 128,893.46 × 65,151.60
4. Step 4: Simplify right side
   93,429.51x = 8,397,614,822.78
5. Step 5: Solve for x
   x = 8,397,614,822.78/93,429.51
6. Step 6: Final answer
   x = 89,881.82