Finding the Fourth Proportional to 102,667.64, 141,679.83 and 57,346.25

Step by Step Solution

1. Step 1: Write the proportion equation
   102,667.64 : 141,679.83 = 57,346.25 : x
2. Step 2: Convert to fraction form
   102,667.64/141,679.83 = 57,346.25/x
3. Step 3: Cross multiply
   102,667.64x = 141,679.83 × 57,346.25
4. Step 4: Simplify right side
   102,667.64x = 8,124,807,305.34
5. Step 5: Solve for x
   x = 8,124,807,305.34/102,667.64
6. Step 6: Final answer
   x = 79,136.99