Finding the Fourth Proportional to 128,967,667.38, 177,975,392.19 and 70,230,314.94

Step by Step Solution

1. Step 1: Write the proportion equation
   128,967,667.38 : 177,975,392.19 = 70,230,314.94 : x
2. Step 2: Convert to fraction form
   128,967,667.38/177,975,392.19 = 70,230,314.94/x
3. Step 3: Cross multiply
   128,967,667.38x = 177,975,392.19 × 70,230,314.94
4. Step 4: Simplify right side
   128,967,667.38x = 12,499,267,845,073,716
5. Step 5: Solve for x
   x = 12,499,267,845,073,716/128,967,667.38
6. Step 6: Final answer
   x = 96,917,840.72