Finding the Fourth Proportional to 81,830.52, 122,594.58 and 42,345.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,830.52 : 122,594.58 = 42,345.72 : x
2. Step 2: Convert to fraction form
   81,830.52/122,594.58 = 42,345.72/x
3. Step 3: Cross multiply
   81,830.52x = 122,594.58 × 42,345.72
4. Step 4: Simplify right side
   81,830.52x = 5,191,355,758.20
5. Step 5: Solve for x
   x = 5,191,355,758.20/81,830.52
6. Step 6: Final answer
   x = 63,440.34