Finding the Fourth Proportional to 286,074.54, 429,112.17 and 99,086.04

Step by Step Solution

1. Step 1: Write the proportion equation
   286,074.54 : 429,112.17 = 99,086.04 : x
2. Step 2: Convert to fraction form
   286,074.54/429,112.17 = 99,086.04/x
3. Step 3: Cross multiply
   286,074.54x = 429,112.17 × 99,086.04
4. Step 4: Simplify right side
   286,074.54x = 42,519,025,641.11
5. Step 5: Solve for x
   x = 42,519,025,641.11/286,074.54
6. Step 6: Final answer
   x = 148,629.18