Finding the Fourth Proportional to 99,921.04, 137,826.59 and 59,603.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,921.04 : 137,826.59 = 59,603.69 : x
2. Step 2: Convert to fraction form
   99,921.04/137,826.59 = 59,603.69/x
3. Step 3: Cross multiply
   99,921.04x = 137,826.59 × 59,603.69
4. Step 4: Simplify right side
   99,921.04x = 8,214,973,390.67
5. Step 5: Solve for x
   x = 8,214,973,390.67/99,921.04
6. Step 6: Final answer
   x = 82,214.65