Finding the Fourth Proportional to 76,337.83, 105,347.90 and 42,345.21

Step by Step Solution

1. Step 1: Write the proportion equation
   76,337.83 : 105,347.90 = 42,345.21 : x
2. Step 2: Convert to fraction form
   76,337.83/105,347.90 = 42,345.21/x
3. Step 3: Cross multiply
   76,337.83x = 105,347.90 × 42,345.21
4. Step 4: Simplify right side
   76,337.83x = 4,460,978,948.56
5. Step 5: Solve for x
   x = 4,460,978,948.56/76,337.83
6. Step 6: Final answer
   x = 58,437.33