Finding the Fourth Proportional to 99,074.76, 148,622.52 and 42,920.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,074.76 : 148,622.52 = 42,920.56 : x
2. Step 2: Convert to fraction form
   99,074.76/148,622.52 = 42,920.56/x
3. Step 3: Cross multiply
   99,074.76x = 148,622.52 × 42,920.56
4. Step 4: Simplify right side
   99,074.76x = 6,378,961,787.01
5. Step 5: Solve for x
   x = 6,378,961,787.01/99,074.76
6. Step 6: Final answer
   x = 64,385.34