Finding the Fourth Proportional to 91,381,854.23, 126,108,669.72 and 56,081,965.63

Step by Step Solution

1. Step 1: Write the proportion equation
   91,381,854.23 : 126,108,669.72 = 56,081,965.63 : x
2. Step 2: Convert to fraction form
   91,381,854.23/126,108,669.72 = 56,081,965.63/x
3. Step 3: Cross multiply
   91,381,854.23x = 126,108,669.72 × 56,081,965.63
4. Step 4: Simplify right side
   91,381,854.23x = 7,072,422,080,882,062
5. Step 5: Solve for x
   x = 7,072,422,080,882,062/91,381,854.23
6. Step 6: Final answer
   x = 77,394,162.56