Finding the Fourth Proportional to 124,403,423.46, 171,710,870.67 and 72,209,274.45

Step by Step Solution

1. Step 1: Write the proportion equation
   124,403,423.46 : 171,710,870.67 = 72,209,274.45 : x
2. Step 2: Convert to fraction form
   124,403,423.46/171,710,870.67 = 72,209,274.45/x
3. Step 3: Cross multiply
   124,403,423.46x = 171,710,870.67 × 72,209,274.45
4. Step 4: Simplify right side
   124,403,423.46x = 12,399,117,386,258,484
5. Step 5: Solve for x
   x = 12,399,117,386,258,484/124,403,423.46
6. Step 6: Final answer
   x = 99,668,618.77