Finding the Fourth Proportional to 47,699.31, 65,787.49 and 42,254.21

Step by Step Solution

1. Step 1: Write the proportion equation
   47,699.31 : 65,787.49 = 42,254.21 : x
2. Step 2: Convert to fraction form
   47,699.31/65,787.49 = 42,254.21/x
3. Step 3: Cross multiply
   47,699.31x = 65,787.49 × 42,254.21
4. Step 4: Simplify right side
   47,699.31x = 2,779,798,417.83
5. Step 5: Solve for x
   x = 2,779,798,417.83/47,699.31
6. Step 6: Final answer
   x = 58,277.54