Finding the Fourth Proportional to 76,100.52, 114,115.59 and 42,820.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,100.52 : 114,115.59 = 42,820.58 : x
2. Step 2: Convert to fraction form
   76,100.52/114,115.59 = 42,820.58/x
3. Step 3: Cross multiply
   76,100.52x = 114,115.59 × 42,820.58
4. Step 4: Simplify right side
   76,100.52x = 4,886,495,273.80
5. Step 5: Solve for x
   x = 4,886,495,273.80/76,100.52
6. Step 6: Final answer
   x = 64,211.07