Finding the Fourth Proportional to 102,742.04, 141,783.53 and 57,419.98

Step by Step Solution

1. Step 1: Write the proportion equation
   102,742.04 : 141,783.53 = 57,419.98 : x
2. Step 2: Convert to fraction form
   102,742.04/141,783.53 = 57,419.98/x
3. Step 3: Cross multiply
   102,742.04x = 141,783.53 × 57,419.98
4. Step 4: Simplify right side
   102,742.04x = 8,141,206,815.37
5. Step 5: Solve for x
   x = 8,141,206,815.37/102,742.04
6. Step 6: Final answer
   x = 79,239.29