Finding the Fourth Proportional to 112,379.31, 155,082.96 and 62,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   112,379.31 : 155,082.96 = 62,078.31 : x
2. Step 2: Convert to fraction form
   112,379.31/155,082.96 = 62,078.31/x
3. Step 3: Cross multiply
   112,379.31x = 155,082.96 × 62,078.31
4. Step 4: Simplify right side
   112,379.31x = 9,627,288,066.60
5. Step 5: Solve for x
   x = 9,627,288,066.60/112,379.31
6. Step 6: Final answer
   x = 85,667.80