Finding the Fourth Proportional to 93,156.50, 128,588.37 and 55,429.94

Step by Step Solution

1. Step 1: Write the proportion equation
   93,156.50 : 128,588.37 = 55,429.94 : x
2. Step 2: Convert to fraction form
   93,156.50/128,588.37 = 55,429.94/x
3. Step 3: Cross multiply
   93,156.50x = 128,588.37 × 55,429.94
4. Step 4: Simplify right side
   93,156.50x = 7,127,645,633.80
5. Step 5: Solve for x
   x = 7,127,645,633.80/93,156.50
6. Step 6: Final answer
   x = 76,512.60