Finding the Fourth Proportional to 116,338,513.68, 160,547,109.71 and 64,128,421.24

Step by Step Solution

1. Step 1: Write the proportion equation
   116,338,513.68 : 160,547,109.71 = 64,128,421.24 : x
2. Step 2: Convert to fraction form
   116,338,513.68/160,547,109.71 = 64,128,421.24/x
3. Step 3: Cross multiply
   116,338,513.68x = 160,547,109.71 × 64,128,421.24
4. Step 4: Simplify right side
   116,338,513.68x = 10,295,632,680,106,328
5. Step 5: Solve for x
   x = 10,295,632,680,106,328/116,338,513.68
6. Step 6: Final answer
   x = 88,497,199.72