Finding the Fourth Proportional to 278,095.77, 417,176.06 and 100,686.33

Step by Step Solution

1. Step 1: Write the proportion equation
   278,095.77 : 417,176.06 = 100,686.33 : x
2. Step 2: Convert to fraction form
   278,095.77/417,176.06 = 100,686.33/x
3. Step 3: Cross multiply
   278,095.77x = 417,176.06 × 100,686.33
4. Step 4: Simplify right side
   278,095.77x = 42,003,925,941.83
5. Step 5: Solve for x
   x = 42,003,925,941.83/278,095.77
6. Step 6: Final answer
   x = 151,041.23