Finding the Fourth Proportional to 139,929,598.67, 193,108,686.53 and 77,209,765.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,929,598.67 : 193,108,686.53 = 77,209,765.29 : x
2. Step 2: Convert to fraction form
   139,929,598.67/193,108,686.53 = 77,209,765.29/x
3. Step 3: Cross multiply
   139,929,598.67x = 193,108,686.53 × 77,209,765.29
4. Step 4: Simplify right side
   139,929,598.67x = 14,909,876,362,055,438
5. Step 5: Solve for x
   x = 14,909,876,362,055,438/139,929,598.67
6. Step 6: Final answer
   x = 106,552,698.67