Finding the Fourth Proportional to 102,953.83, 154,139.55 and 65,420.86

Step by Step Solution

1. Step 1: Write the proportion equation
   102,953.83 : 154,139.55 = 65,420.86 : x
2. Step 2: Convert to fraction form
   102,953.83/154,139.55 = 65,420.86/x
3. Step 3: Cross multiply
   102,953.83x = 154,139.55 × 65,420.86
4. Step 4: Simplify right side
   102,953.83x = 10,083,941,921.01
5. Step 5: Solve for x
   x = 10,083,941,921.01/102,953.83
6. Step 6: Final answer
   x = 97,946.25