Finding the Fourth Proportional to 102,017.19, 140,796.86 and 57,313.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,017.19 : 140,796.86 = 57,313.83 : x
2. Step 2: Convert to fraction form
   102,017.19/140,796.86 = 57,313.83/x
3. Step 3: Cross multiply
   102,017.19x = 140,796.86 × 57,313.83
4. Step 4: Simplify right side
   102,017.19x = 8,069,607,441.86
5. Step 5: Solve for x
   x = 8,069,607,441.86/102,017.19
6. Step 6: Final answer
   x = 79,100.47