Finding the Fourth Proportional to 143,709,456.50, 215,582,112 and 56,259,677.43

Step by Step Solution

1. Step 1: Write the proportion equation
   143,709,456.50 : 215,582,112 = 56,259,677.43 : x
2. Step 2: Convert to fraction form
   143,709,456.50/215,582,112 = 56,259,677.43/x
3. Step 3: Cross multiply
   143,709,456.50x = 215,582,112 × 56,259,677.43
4. Step 4: Simplify right side
   143,709,456.50x = 12,128,580,080,798,132
5. Step 5: Solve for x
   x = 12,128,580,080,798,132/143,709,456.50
6. Step 6: Final answer
   x = 84,396,534.35