Finding the Fourth Proportional to 102,959.76, 142,056.34 and 70,704.08

Step by Step Solution

1. Step 1: Write the proportion equation
   102,959.76 : 142,056.34 = 70,704.08 : x
2. Step 2: Convert to fraction form
   102,959.76/142,056.34 = 70,704.08/x
3. Step 3: Cross multiply
   102,959.76x = 142,056.34 × 70,704.08
4. Step 4: Simplify right side
   102,959.76x = 10,043,961,940.83
5. Step 5: Solve for x
   x = 10,043,961,940.83/102,959.76
6. Step 6: Final answer
   x = 97,552.31