Finding the Fourth Proportional to 91,971,873.16, 137,371,514.24 and 83,204,688.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,971,873.16 : 137,371,514.24 = 83,204,688.31 : x
2. Step 2: Convert to fraction form
   91,971,873.16/137,371,514.24 = 83,204,688.31/x
3. Step 3: Cross multiply
   91,971,873.16x = 137,371,514.24 × 83,204,688.31
4. Step 4: Simplify right side
   91,971,873.16x = 11,429,954,025,011,928
5. Step 5: Solve for x
   x = 11,429,954,025,011,928/91,971,873.16
6. Step 6: Final answer
   x = 124,276,625.37