Finding the Fourth Proportional to 96,875,806.56, 133,721,008.56 and 57,729,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   96,875,806.56 : 133,721,008.56 = 57,729,858.72 : x
2. Step 2: Convert to fraction form
   96,875,806.56/133,721,008.56 = 57,729,858.72/x
3. Step 3: Cross multiply
   96,875,806.56x = 133,721,008.56 × 57,729,858.72
4. Step 4: Simplify right side
   96,875,806.56x = 7,719,694,932,064,711
5. Step 5: Solve for x
   x = 7,719,694,932,064,711/96,875,806.56
6. Step 6: Final answer
   x = 79,686,510.04