Finding the Fourth Proportional to 85,408,050.51, 128,085,578.91 and 30,813,538.86

Step by Step Solution

1. Step 1: Write the proportion equation
   85,408,050.51 : 128,085,578.91 = 30,813,538.86 : x
2. Step 2: Convert to fraction form
   85,408,050.51/128,085,578.91 = 30,813,538.86/x
3. Step 3: Cross multiply
   85,408,050.51x = 128,085,578.91 × 30,813,538.86
4. Step 4: Simplify right side
   85,408,050.51x = 3,946,769,963,148,881.50
5. Step 5: Solve for x
   x = 3,946,769,963,148,881.50/85,408,050.51
6. Step 6: Final answer
   x = 46,210,748.75