Finding the Fourth Proportional to 120,423.84, 180,641.52 and 58,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,423.84 : 180,641.52 = 58,146.72 : x
2. Step 2: Convert to fraction form
   120,423.84/180,641.52 = 58,146.72/x
3. Step 3: Cross multiply
   120,423.84x = 180,641.52 × 58,146.72
4. Step 4: Simplify right side
   120,423.84x = 10,503,711,883.81
5. Step 5: Solve for x
   x = 10,503,711,883.81/120,423.84
6. Step 6: Final answer
   x = 87,222.86