Finding the Fourth Proportional to 76,404.08, 105,435.99 and 42,410.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,404.08 : 105,435.99 = 42,410.58 : x
2. Step 2: Convert to fraction form
   76,404.08/105,435.99 = 42,410.58/x
3. Step 3: Cross multiply
   76,404.08x = 105,435.99 × 42,410.58
4. Step 4: Simplify right side
   76,404.08x = 4,471,601,488.77
5. Step 5: Solve for x
   x = 4,471,601,488.77/76,404.08
6. Step 6: Final answer
   x = 58,525.69