Finding the Fourth Proportional to 99,308,820.64, 137,044,020.72 and 57,494,647.84

Step by Step Solution

1. Step 1: Write the proportion equation
   99,308,820.64 : 137,044,020.72 = 57,494,647.84 : x
2. Step 2: Convert to fraction form
   99,308,820.64/137,044,020.72 = 57,494,647.84/x
3. Step 3: Cross multiply
   99,308,820.64x = 137,044,020.72 × 57,494,647.84
4. Step 4: Simplify right side
   99,308,820.64x = 7,879,297,709,874,064
5. Step 5: Solve for x
   x = 7,879,297,709,874,064/99,308,820.64
6. Step 6: Final answer
   x = 79,341,368.26