Finding the Fourth Proportional to 303,498.78, 455,208.21 and 93,119.10

Step by Step Solution

1. Step 1: Write the proportion equation
   303,498.78 : 455,208.21 = 93,119.10 : x
2. Step 2: Convert to fraction form
   303,498.78/455,208.21 = 93,119.10/x
3. Step 3: Cross multiply
   303,498.78x = 455,208.21 × 93,119.10
4. Step 4: Simplify right side
   303,498.78x = 42,388,578,827.81
5. Step 5: Solve for x
   x = 42,388,578,827.81/303,498.78
6. Step 6: Final answer
   x = 139,666.39