Finding the Fourth Proportional to 102,598.78, 154,039.92 and 70,931.02

Step by Step Solution

1. Step 1: Write the proportion equation
   102,598.78 : 154,039.92 = 70,931.02 : x
2. Step 2: Convert to fraction form
   102,598.78/154,039.92 = 70,931.02/x
3. Step 3: Cross multiply
   102,598.78x = 154,039.92 × 70,931.02
4. Step 4: Simplify right side
   102,598.78x = 10,926,208,646.32
5. Step 5: Solve for x
   x = 10,926,208,646.32/102,598.78
6. Step 6: Final answer
   x = 106,494.53