Finding the Fourth Proportional to 102,019, 140,799.46 and 57,307

Step by Step Solution

1. Step 1: Write the proportion equation
   102,019 : 140,799.46 = 57,307 : x
2. Step 2: Convert to fraction form
   102,019/140,799.46 = 57,307/x
3. Step 3: Cross multiply
   102,019x = 140,799.46 × 57,307
4. Step 4: Simplify right side
   102,019x = 8,068,794,654.22
5. Step 5: Solve for x
   x = 8,068,794,654.22/102,019
6. Step 6: Final answer
   x = 79,091.10