Finding the Fourth Proportional to 82,788,404.90, 124,182,607.35 and 81,444,712.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,788,404.90 : 124,182,607.35 = 81,444,712.10 : x
2. Step 2: Convert to fraction form
   82,788,404.90/124,182,607.35 = 81,444,712.10/x
3. Step 3: Cross multiply
   82,788,404.90x = 124,182,607.35 × 81,444,712.10
4. Step 4: Simplify right side
   82,788,404.90x = 10,114,016,703,448,092
5. Step 5: Solve for x
   x = 10,114,016,703,448,092/82,788,404.90
6. Step 6: Final answer
   x = 122,167,068.15