Finding the Fourth Proportional to 99,111.96, 148,604.76 and 42,155.28

Step by Step Solution

1. Step 1: Write the proportion equation
   99,111.96 : 148,604.76 = 42,155.28 : x
2. Step 2: Convert to fraction form
   99,111.96/148,604.76 = 42,155.28/x
3. Step 3: Cross multiply
   99,111.96x = 148,604.76 × 42,155.28
4. Step 4: Simplify right side
   99,111.96x = 6,264,475,267.13
5. Step 5: Solve for x
   x = 6,264,475,267.13/99,111.96
6. Step 6: Final answer
   x = 63,206.05