Finding the Fourth Proportional to 91,450,428.48, 137,723,082.24 and 83,287,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,450,428.48 : 137,723,082.24 = 83,287,494.72 : x
2. Step 2: Convert to fraction form
   91,450,428.48/137,723,082.24 = 83,287,494.72/x
3. Step 3: Cross multiply
   91,450,428.48x = 137,723,082.24 × 83,287,494.72
4. Step 4: Simplify right side
   91,450,428.48x = 11,470,610,484,886,126
5. Step 5: Solve for x
   x = 11,470,610,484,886,126/91,450,428.48
6. Step 6: Final answer
   x = 125,429,816.74