Finding the Fourth Proportional to 78,512.58, 108,346.56 and 42,702.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,512.58 : 108,346.56 = 42,702.88 : x
2. Step 2: Convert to fraction form
   78,512.58/108,346.56 = 42,702.88/x
3. Step 3: Cross multiply
   78,512.58x = 108,346.56 × 42,702.88
4. Step 4: Simplify right side
   78,512.58x = 4,626,710,150.09
5. Step 5: Solve for x
   x = 4,626,710,150.09/78,512.58
6. Step 6: Final answer
   x = 58,929.54