Finding the Fourth Proportional to 107,632,123.21, 148,578,242.16 and 72,370,367.01

Step by Step Solution

1. Step 1: Write the proportion equation
   107,632,123.21 : 148,578,242.16 = 72,370,367.01 : x
2. Step 2: Convert to fraction form
   107,632,123.21/148,578,242.16 = 72,370,367.01/x
3. Step 3: Cross multiply
   107,632,123.21x = 148,578,242.16 × 72,370,367.01
4. Step 4: Simplify right side
   107,632,123.21x = 10,752,661,914,678,832
5. Step 5: Solve for x
   x = 10,752,661,914,678,832/107,632,123.21
6. Step 6: Final answer
   x = 99,901,977.16