Finding the Fourth Proportional to 286,086.56, 429,130.20 and 99,098.04

Step by Step Solution

1. Step 1: Write the proportion equation
   286,086.56 : 429,130.20 = 99,098.04 : x
2. Step 2: Convert to fraction form
   286,086.56/429,130.20 = 99,098.04/x
3. Step 3: Cross multiply
   286,086.56x = 429,130.20 × 99,098.04
4. Step 4: Simplify right side
   286,086.56x = 42,525,961,724.81
5. Step 5: Solve for x
   x = 42,525,961,724.81/286,086.56
6. Step 6: Final answer
   x = 148,647.18