Finding the Fourth Proportional to 115,035.78, 158,748.12 and 64,047.40

Step by Step Solution

1. Step 1: Write the proportion equation
   115,035.78 : 158,748.12 = 64,047.40 : x
2. Step 2: Convert to fraction form
   115,035.78/158,748.12 = 64,047.40/x
3. Step 3: Cross multiply
   115,035.78x = 158,748.12 × 64,047.40
4. Step 4: Simplify right side
   115,035.78x = 10,167,404,340.89
5. Step 5: Solve for x
   x = 10,167,404,340.89/115,035.78
6. Step 6: Final answer
   x = 88,384.71