Finding the Fourth Proportional to 101,099.36, 151,643.57 and 30,978.87

Step by Step Solution

1. Step 1: Write the proportion equation
   101,099.36 : 151,643.57 = 30,978.87 : x
2. Step 2: Convert to fraction form
   101,099.36/151,643.57 = 30,978.87/x
3. Step 3: Cross multiply
   101,099.36x = 151,643.57 × 30,978.87
4. Step 4: Simplify right side
   101,099.36x = 4,697,746,286.47
5. Step 5: Solve for x
   x = 4,697,746,286.47/101,099.36
6. Step 6: Final answer
   x = 46,466.63