Finding the Fourth Proportional to 157,456.17, 236,162.07 and 45,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   157,456.17 : 236,162.07 = 45,145.98 : x
2. Step 2: Convert to fraction form
   157,456.17/236,162.07 = 45,145.98/x
3. Step 3: Cross multiply
   157,456.17x = 236,162.07 × 45,145.98
4. Step 4: Simplify right side
   157,456.17x = 10,661,768,088.98
5. Step 5: Solve for x
   x = 10,661,768,088.98/157,456.17
6. Step 6: Final answer
   x = 67,712.61