Finding the Fourth Proportional to 114,426, 157,917.60 and 64,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,426 : 157,917.60 = 64,134.72 : x
2. Step 2: Convert to fraction form
   114,426/157,917.60 = 64,134.72/x
3. Step 3: Cross multiply
   114,426x = 157,917.60 × 64,134.72
4. Step 4: Simplify right side
   114,426x = 10,128,001,059.07
5. Step 5: Solve for x
   x = 10,128,001,059.07/114,426
6. Step 6: Final answer
   x = 88,511.36