Finding the Fourth Proportional to 47,779.70, 65,761.94 and 42,077.12

Step by Step Solution

1. Step 1: Write the proportion equation
   47,779.70 : 65,761.94 = 42,077.12 : x
2. Step 2: Convert to fraction form
   47,779.70/65,761.94 = 42,077.12/x
3. Step 3: Cross multiply
   47,779.70x = 65,761.94 × 42,077.12
4. Step 4: Simplify right side
   47,779.70x = 2,767,072,830.43
5. Step 5: Solve for x
   x = 2,767,072,830.43/47,779.70
6. Step 6: Final answer
   x = 57,913.15