Finding the Fourth Proportional to 102,495, 141,443.13 and 57,783

Step by Step Solution

1. Step 1: Write the proportion equation
   102,495 : 141,443.13 = 57,783 : x
2. Step 2: Convert to fraction form
   102,495/141,443.13 = 57,783/x
3. Step 3: Cross multiply
   102,495x = 141,443.13 × 57,783
4. Step 4: Simplify right side
   102,495x = 8,173,008,380.79
5. Step 5: Solve for x
   x = 8,173,008,380.79/102,495
6. Step 6: Final answer
   x = 79,740.56