Finding the Fourth Proportional to 102,498.54, 141,447 and 56,558.61

Step by Step Solution

1. Step 1: Write the proportion equation
   102,498.54 : 141,447 = 56,558.61 : x
2. Step 2: Convert to fraction form
   102,498.54/141,447 = 56,558.61/x
3. Step 3: Cross multiply
   102,498.54x = 141,447 × 56,558.61
4. Step 4: Simplify right side
   102,498.54x = 8,000,045,708.67
5. Step 5: Solve for x
   x = 8,000,045,708.67/102,498.54
6. Step 6: Final answer
   x = 78,050.34