Finding the Fourth Proportional to 91,810,111.80, 137,715,167.70 and 91,810,111.80

Step by Step Solution

1. Step 1: Write the proportion equation
   91,810,111.80 : 137,715,167.70 = 91,810,111.80 : x
2. Step 2: Convert to fraction form
   91,810,111.80/137,715,167.70 = 91,810,111.80/x
3. Step 3: Cross multiply
   91,810,111.80x = 137,715,167.70 × 91,810,111.80
4. Step 4: Simplify right side
   91,810,111.80x = 12,643,644,943,092,748
5. Step 5: Solve for x
   x = 12,643,644,943,092,748/91,810,111.80
6. Step 6: Final answer
   x = 137,715,167.70