Finding the Fourth Proportional to 278,301.16, 417,484.56 and 88,695.55

Step by Step Solution

1. Step 1: Write the proportion equation
   278,301.16 : 417,484.56 = 88,695.55 : x
2. Step 2: Convert to fraction form
   278,301.16/417,484.56 = 88,695.55/x
3. Step 3: Cross multiply
   278,301.16x = 417,484.56 × 88,695.55
4. Step 4: Simplify right side
   278,301.16x = 37,029,022,665.71
5. Step 5: Solve for x
   x = 37,029,022,665.71/278,301.16
6. Step 6: Final answer
   x = 133,053.78