Finding the Fourth Proportional to 56,925,828.88, 78,556,706.06 and 30,820,138

Step by Step Solution

1. Step 1: Write the proportion equation
   56,925,828.88 : 78,556,706.06 = 30,820,138 : x
2. Step 2: Convert to fraction form
   56,925,828.88/78,556,706.06 = 30,820,138/x
3. Step 3: Cross multiply
   56,925,828.88x = 78,556,706.06 × 30,820,138
4. Step 4: Simplify right side
   56,925,828.88x = 2,421,128,521,594,636.50
5. Step 5: Solve for x
   x = 2,421,128,521,594,636.50/56,925,828.88
6. Step 6: Final answer
   x = 42,531,282.71