Finding the Fourth Proportional to 115,061.76, 158,775.12 and 64,070.64

Step by Step Solution

1. Step 1: Write the proportion equation
   115,061.76 : 158,775.12 = 64,070.64 : x
2. Step 2: Convert to fraction form
   115,061.76/158,775.12 = 64,070.64/x
3. Step 3: Cross multiply
   115,061.76x = 158,775.12 × 64,070.64
4. Step 4: Simplify right side
   115,061.76x = 10,172,823,554.48
5. Step 5: Solve for x
   x = 10,172,823,554.48/115,061.76
6. Step 6: Final answer
   x = 88,411.85