Finding the Fourth Proportional to 85,099.76, 117,599.52 and 63,842.12

Step by Step Solution

1. Step 1: Write the proportion equation
   85,099.76 : 117,599.52 = 63,842.12 : x
2. Step 2: Convert to fraction form
   85,099.76/117,599.52 = 63,842.12/x
3. Step 3: Cross multiply
   85,099.76x = 117,599.52 × 63,842.12
4. Step 4: Simplify right side
   85,099.76x = 7,507,802,667.78
5. Step 5: Solve for x
   x = 7,507,802,667.78/85,099.76
6. Step 6: Final answer
   x = 88,223.55