Finding the Fourth Proportional to 83,543.83, 125,186.74 and 56,419.86

Step by Step Solution

1. Step 1: Write the proportion equation
   83,543.83 : 125,186.74 = 56,419.86 : x
2. Step 2: Convert to fraction form
   83,543.83/125,186.74 = 56,419.86/x
3. Step 3: Cross multiply
   83,543.83x = 125,186.74 × 56,419.86
4. Step 4: Simplify right side
   83,543.83x = 7,063,018,375.52
5. Step 5: Solve for x
   x = 7,063,018,375.52/83,543.83
6. Step 6: Final answer
   x = 84,542.67