Finding the Fourth Proportional to 115,462,407.02, 159,300,631.23 and 78,729,205.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,462,407.02 : 159,300,631.23 = 78,729,205.10 : x
2. Step 2: Convert to fraction form
   115,462,407.02/159,300,631.23 = 78,729,205.10/x
3. Step 3: Cross multiply
   115,462,407.02x = 159,300,631.23 × 78,729,205.10
4. Step 4: Simplify right side
   115,462,407.02x = 12,541,612,068,666,134
5. Step 5: Solve for x
   x = 12,541,612,068,666,134/115,462,407.02
6. Step 6: Final answer
   x = 108,620,739.79