Finding the Fourth Proportional to 153,860,382.72, 212,325,716.80 and 83,294,414.72

Step by Step Solution

1. Step 1: Write the proportion equation
   153,860,382.72 : 212,325,716.80 = 83,294,414.72 : x
2. Step 2: Convert to fraction form
   153,860,382.72/212,325,716.80 = 83,294,414.72/x
3. Step 3: Cross multiply
   153,860,382.72x = 212,325,716.80 × 83,294,414.72
4. Step 4: Simplify right side
   153,860,382.72x = 17,685,546,310,860,472
5. Step 5: Solve for x
   x = 17,685,546,310,860,472/153,860,382.72
6. Step 6: Final answer
   x = 114,945,419.99