Finding the Fourth Proportional to 139,136,878.26, 207,768,359.39 and 113,628,487.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,136,878.26 : 207,768,359.39 = 113,628,487.86 : x
2. Step 2: Convert to fraction form
   139,136,878.26/207,768,359.39 = 113,628,487.86/x
3. Step 3: Cross multiply
   139,136,878.26x = 207,768,359.39 × 113,628,487.86
4. Step 4: Simplify right side
   139,136,878.26x = 23,608,404,502,070,588
5. Step 5: Solve for x
   x = 23,608,404,502,070,588/139,136,878.26
6. Step 6: Final answer
   x = 169,677,549.17