Finding the Fourth Proportional to 93,150.52, 128,678.40 and 83,075.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93,150.52 : 128,678.40 = 83,075.72 : x
2. Step 2: Convert to fraction form
   93,150.52/128,678.40 = 83,075.72/x
3. Step 3: Cross multiply
   93,150.52x = 128,678.40 × 83,075.72
4. Step 4: Simplify right side
   93,150.52x = 10,690,050,728.45
5. Step 5: Solve for x
   x = 10,690,050,728.45/93,150.52
6. Step 6: Final answer
   x = 114,761.04