Finding the Fourth Proportional to 143,068,514.52, 197,423,293.50 and 81,188,852.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,068,514.52 : 197,423,293.50 = 81,188,852.88 : x
2. Step 2: Convert to fraction form
   143,068,514.52/197,423,293.50 = 81,188,852.88/x
3. Step 3: Cross multiply
   143,068,514.52x = 197,423,293.50 × 81,188,852.88
4. Step 4: Simplify right side
   143,068,514.52x = 16,028,570,731,056,560
5. Step 5: Solve for x
   x = 16,028,570,731,056,560/143,068,514.52
6. Step 6: Final answer
   x = 112,034,229.09