Finding the Fourth Proportional to 93,736.63, 129,416.90 and 83,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93,736.63 : 129,416.90 = 83,647.72 : x
2. Step 2: Convert to fraction form
   93,736.63/129,416.90 = 83,647.72/x
3. Step 3: Cross multiply
   93,736.63x = 129,416.90 × 83,647.72
4. Step 4: Simplify right side
   93,736.63x = 10,825,428,614.47
5. Step 5: Solve for x
   x = 10,825,428,614.47/93,736.63
6. Step 6: Final answer
   x = 115,487.71