Finding the Fourth Proportional to 139,953,499.85, 193,174,248.73 and 81,235,081.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,953,499.85 : 193,174,248.73 = 81,235,081.98 : x
2. Step 2: Convert to fraction form
   139,953,499.85/193,174,248.73 = 81,235,081.98/x
3. Step 3: Cross multiply
   139,953,499.85x = 193,174,248.73 × 81,235,081.98
4. Step 4: Simplify right side
   139,953,499.85x = 15,692,525,932,885,406
5. Step 5: Solve for x
   x = 15,692,525,932,885,406/139,953,499.85
6. Step 6: Final answer
   x = 112,126,713.16