Finding the Fourth Proportional to 124,403,110.98, 171,710,443.32 and 72,208,961.76

Step by Step Solution

1. Step 1: Write the proportion equation
   124,403,110.98 : 171,710,443.32 = 72,208,961.76 : x
2. Step 2: Convert to fraction form
   124,403,110.98/171,710,443.32 = 72,208,961.76/x
3. Step 3: Cross multiply
   124,403,110.98x = 171,710,443.32 × 72,208,961.76
4. Step 4: Simplify right side
   124,403,110.98x = 12,399,032,835,859,658
5. Step 5: Solve for x
   x = 12,399,032,835,859,658/124,403,110.98
6. Step 6: Final answer
   x = 99,668,189.47