Finding the Fourth Proportional to 77,779.46, 116,451.30 and 42,112.73

Step by Step Solution

1. Step 1: Write the proportion equation
   77,779.46 : 116,451.30 = 42,112.73 : x
2. Step 2: Convert to fraction form
   77,779.46/116,451.30 = 42,112.73/x
3. Step 3: Cross multiply
   77,779.46x = 116,451.30 × 42,112.73
4. Step 4: Simplify right side
   77,779.46x = 4,904,082,155.05
5. Step 5: Solve for x
   x = 4,904,082,155.05/77,779.46
6. Step 6: Final answer
   x = 63,051.12